78-Year-Old Professor vs. the Burrito Bot: Her One-Woman War

Philadelphia — The flu shot was the easy part. It was what came after that got Carolyn Marvin arrested.

The 78-year-old retired University of Pennsylvania professor was walking out of her appointment in Center City Philadelphia on Wednesday afternoon when a small, six-wheeled robot trundled toward her down the sidewalk, somebody's locked lunch order riding in its belly. Marvin, who has spent months stepping in front of these machines wherever she finds them, did what she always does. She planted herself in its path — and refused to move.

This time, the police moved her.

Photo: An Amazon Robotics drive unit — the indoor end of the automation economy that has now put robots on Philadelphia's sidewalks. This is an illustrative photo, not the Avride unit in this story. (Geni / Wikimedia Commons, CC BY-SA 4.0)

The Arrest on Filbert Street

Officers arrived on the 1200 block of Filbert Street at around 1:16 p.m. on October 14, responding to a call about — this phrase deserves to be preserved exactly as filed — "criminal mischief involving a robot." There, near the Reading Terminal Market end of the block, Marvin was standing her ground in front of an Avride delivery robot operating for Uber Eats. Officers asked her multiple times to step aside and let the machine finish its route. She would not.

She was arrested on a disorderly conduct charge and issued a criminal violation notice. We checked: the 1200 block of Filbert Street is the same block as Reading Terminal Market's 12th Street entrance — the arrest happened in one of Center City's busiest pedestrian corridors, in front of bystanders who filmed the whole thing. It was the first of her blockades to end in cuffs.

A One-Woman War, Months in the Making

Marvin has been waging her sidewalk campaign for months, confronting delivery robots so many times she can no longer remember the count. She says she is careful to step around human pedestrians — her blockade is aimed only at the machines. In September, one of her Broad Street standoffs circulated on social media after a witness, Ashley Baldwin, first assumed the robot had struck her. It had not. Marvin had simply refused to let it pass, and when Baldwin asked what was happening, the professor replied: "they're taking over the world."

Asked whether the arrest will stop her, Marvin answered with the whole philosophy in three words: "I do. Why not?"

The Professor of Protest

Here is the part that elevates this from a funny local story into something genuinely interesting. Marvin is professor emerita at Penn's Annenberg School for Communication, a scholar of the social history of communication and the author of When Old Technologies Were New. She taught a class in freedom of expression. She spent her career teaching students where the First Amendment begins and ends — and has now decided to test the boundary with her own body.

She frames the whole thing as citizenship, not vandalism. "I think it's my First Amendment right to publicly demonstrate on a sidewalk to protest against delivery robots," she told 6abc Action News. "I'm exercising the rights of my citizenship, so I think of it in those terms." Her motive is plain: she believes the robots are taking the jobs of human delivery workers, and she stands in front of them whenever she encounters them. She also says the standoffs spark conversations with passersby about automation — the kind of exchanges, she argues, public space is for. She plans to contest the charge.

The Robot She Stood In Front Of

Uber Eats launched its Avride-powered autonomous delivery service in Center City Philadelphia in March 2026, and Philadelphia is one of 11 cities where the program operates. The machines top out at about 5 mph, run up to 12 hours on a charge, and navigate with cameras, ultrasonic sensors and lidar, backed by a remote support team. Customers track the robot in the app and unlock its cargo hatch on arrival — and, notably, no tips are involved.

Pennsylvania, to its credit, has at least thought about this. The state's personal-delivery-device framework requires the robots to yield to pedestrians, and operator violations carry fines of $25 to $1,000. Philadelphians have not exactly welcomed the machines: in April, about a month after launch, a passerby kicked one repeatedly and knocked it over — and in a separate viral incident, somebody simply sat on one. Uber declined to comment on Marvin's arrest; the company has previously maintained that the robots are not intended to replace human couriers. And a Philadelphia Inquirer investigation found some restaurants in the zone receiving robot pickups even when their owners did not recall signing up.

The sidewalk bots are the consumer-facing edge of a much bigger automation wave — global shipments of professional service robots jumped 24 percent to nearly 250,000 units last year, per the International Federation of Robotics.

Photo: An Avride delivery robot on a Philadelphia sidewalk, graffiti scrawled on its flank — a measure of how the machines sit with some residents. Illustrative photo — not the unit from the Oct 14 incident. (Aluminum / Wikimedia Commons, CC0)

Who Owns the Sidewalk?

Here is my honest read: Marvin is half right, and the half she is wrong about is the one that got her arrested. The sidewalk is the classic American public forum — protesting on one is exactly what the First Amendment protects, and a freedom-of-expression professor knows that better than anyone. But the First Amendment does not protect refusing a lawful police order to move, which is what the disorderly conduct charge is actually about. She can hold a sign on the sidewalk. She cannot hold a robot hostage on it. The law, as her own former syllabus would put it, is messier than the slogan.

But the deeper scandal here is not Marvin's. It is the city's. No American city has a coherent answer for who gets the sidewalk now that corporations want to run delivery fleets on it. Philadelphia's approach has been shoddy: deploy first, regulate later, and let a 78-year-old professor do the city's thinking for it. Elsewhere, the friction is already boiling over — Chicago's 1st Ward banned sidewalk delivery robots earlier this year after a ward survey returned more than 80 percent opposition, and Paris Marx's 2022 monograph Road to Nowhere documents the robots blocking disabled pedestrians. Marvin's blockade was crude. But it asked the question every city council has been dodging: if the sidewalk is public, who gave Uber Eats a lane on it?

Do the Bots Actually Eat Jobs?

The honest math first: there is no established finding that any Philadelphia delivery worker has actually lost a job to these robots. None of the reporting on the rollout — including the Inquirer's investigation — documents a layoff, and Uber's position is that the machines are not meant to replace human couriers.

But that is the wrong test. Marvin is protesting the trajectory, not the current payroll. Labor fights always arrive before the layoff data — the people who see the machine on the sidewalk never show up in next year's employment statistics. She is early, which is not the same as being wrong. And the physical world is plainly the next interface for this fight: the same industry racing to put models in bodies — OpenAI's plan to build its own humanoid robot, for one — has already had a moment where a chatbot drove a Toyota to In-N-Out. The machines are leaving the data center and entering the street, and nobody voted on it.

Whether the robots are "taking" jobs today is the wrong question. The right one is who gets a say in the answer — and right now, that answer is being decided by a product roadmap, not by the public. It is the same capital-versus-labor fight The New York Times called the largest theft of labor in human history — while the money keeps pouring the other way, from DeepSeek's $400M bet on a stealth robot startup to the race to feed robots real-world human data.

Frequently Asked Questions

What exactly happened on Filbert Street?

On Wednesday, October 14, at about 1:16 p.m., Philadelphia police responded to a "criminal mischief involving a robot" call on the 1200 block of Filbert Street, near Reading Terminal Market. Carolyn Marvin, 78, was blocking an Avride delivery robot operating for Uber Eats and refused multiple police orders to move. She was arrested for disorderly conduct and issued a criminal violation notice — the first time police had intervened in one of her months-long series of robot blockades.

Is blocking a delivery robot protected by the First Amendment?

That is the argument Marvin intends to make — she calls it her First Amendment right to demonstrate on a sidewalk. Legal observers would note the distinction that matters: protesting on a sidewalk is classic protected speech, but refusing police orders to disperse is not. She plans to contest the charge, which sets up the irresistible test case: a freedom-of-expression professor defending her own sidewalk protest in court.

What are the Uber Eats robots in Philadelphia?

Sidewalk delivery robots built by Avride and deployed by Uber Eats in Center City starting March 2026; Philadelphia is one of 11 cities in the program. They travel up to 5 mph, run up to 12 hours per charge, navigate with cameras, ultrasonic sensors and lidar, and are monitored by a remote support team. Customers track them in the Uber Eats app and unlock the cargo hatch on arrival. Under Pennsylvania's personal-delivery-device framework, they must yield to pedestrians.

Will she keep blocking them?

Asked directly, she said: "I do. Why not?" So yes.

Are the robots really taking people's jobs?

No documented job losses in Philadelphia have been established, and Uber says the robots are not intended to replace human couriers. Marvin's protest is aimed at the direction of travel — automation entering the delivery workforce — rather than at layoffs that have already happened. That displacement question is unresolved, which is precisely why she is protesting now.

What rights does the robot have on the sidewalk?

Short answer: the robot yields to you, not the other way round. Pennsylvania's personal-delivery-device framework requires the robots to yield to pedestrians, and operator violations carry fines of $25 to $1,000 — a detail already in our reporting above. Marvin's legal fight is about whether a citizen standing in the robot's path counts as protected protest or as obstruction; the disorderly conduct charge does not settle that question, which is exactly why her planned court contest matters.

Sources: 6abc Action News (WPVI-TV) — the primary interview with Carolyn Marvin; Philly Voice — original local reporting on the arrest; The Verge (Oct 18); NY Post (Oct 17); The Sun — the flu-shot detail; hypefresh — background on her months-long campaign and Uber's declined comment; gadgetreview.com via the Philadelphia Inquirer — Avride specs and the state regulatory framework; thehooknews.com via the Philadelphia Inquirer — the opt-in investigation and the jobs question; rnbphilly — the September Broad Street incident; Wikipedia's "Delivery robot" entry — the Chicago ward ban (citing Block Club Chicago, Feb 2026) and Los Angeles opposition (citing The Guardian, May 2026).

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About the author: Lalu Baidya covers AI, robotics and the strange collision of language models with the physical world for TechPulse USA.

About TechPulse USA: TechPulse USA is an independent technology publication covering the stories shaping the future — artificial intelligence, robotics, and the companies racing to build them. Our reporting is researched from primary sources and reputable outlets, and every fact we print is verified before publication.