A Tesla Cybercab loses a door panel in a Philadelphia crash, revealing its testing far from Texas

A Tesla Cybercab was involved in a crash in Philadelphia this week and lost the entire outer panel of its driver-side door. Photos posted on Reddit show the gold two-seater stopped on South Broad Street, a little more than a mile south of City Hall. No injuries have been reported, and it is not known who caused the collision or whether Tesla's software was driving at the time.

What the photos show

The Reddit user who posted the pictures did not see the crash itself, but wrote that it looked like a low-speed incident. Electrek, which first reported the story, described the damage:

• The outer skin of the left door is gone, exposing the inner frame, the window mechanism and wiring.
• The window glass is intact and the structure underneath does not look bent.
• There is crumpled trim below the door and scuffing on the rear quarter panel.
• A dark sedan is stopped behind the Cybercab, but it is unclear whether it was involved.

Why the door came off in one piece

The Cybercab is not painted. Its body panels are moulded plastic with the colour mixed into the material. As Tesla engineering chief Lars Moravy and design chief Franz von Holzhausen explained to engineer Sandy Munro last year, the coloured skin is attached to a plastic backing and held on by fasteners reached from inside the car.

That makes a clean-coming-off door skin roughly what you would expect. It could be a feature: a cheap outer panel absorbs a light knock and can be swapped quickly, with no body shop or paint work. Or it could mean the panel lets go too easily. A few photos cannot settle which, and there may be damage underneath that is not visible.

What is a Cybercab doing in Philadelphia?

Gold Cybercabs began showing up around Philadelphia in mid-September, about two weeks after Tesla started public Cybercab rides in Austin, Texas. The Philadelphia Inquirer reported several parked at a Tesla store in Devon, west of the city. According to a Reddit user, staff said the cars were being 'trained' for a future local launch. Tesla did not respond to the newspaper's questions. One commuter filmed a Cybercab with a Texas licence plate changing lanes and turning on City Avenue.

Pennsylvania requires a certificate from its transport department, PennDOT, to run a highly automated vehicle (SAE Level 3 and up), with or without a driver. According to Electrek, PennDOT's list includes Waymo, which is cleared for Philadelphia with a driver on board, but not Tesla. Without such a certificate, the Cybercab was most likely driven by hand or running Tesla's software as a Level 2 driver-assistance system, with a human legally responsible. Tesla has been fitting Cybertruck steering wheels to some test Cybercabs; the photos do not show whether this one had one.

Will it show up in federal crash data?

That depends on the mode. Crashes involving an automated driving system must be reported to NHTSA under its Standing General Order, even with only property damage. For a Level 2 system, a crash is only reportable if someone is killed or taken to hospital, an airbag deploys, or a pedestrian or cyclist is hit. If this was a Level 2 drive, it may never appear in the public data.

Why it matters

The crash is minor, but it is a rare look at Tesla's plans beyond Texas. Philadelphia is a dense, older East Coast city with very different streets from Austin, and Waymo is already testing there. It also comes while NHTSA is asking Tesla for sworn proof that a car without a steering wheel or brake pedal meets federal safety rules.

What to watch next

Watch for Tesla to apply for a PennDOT certificate, for more Cybercab sightings on Philadelphia streets, and for the first repair reports, which will show whether the plastic-skin design really is as quick and cheap to fix as Tesla intends.