San Antonio

Runaway Robotaxi Leaves Waymo Stalled In San Antonio Flood Fallout

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Published on April 29, 2026
Runaway Robotaxi Leaves Waymo Stalled In San Antonio Flood FalloutSource: Wikimedia/9yz, CC BY 4.0, via Wikimedia Commons

Waymo’s robotaxi service in San Antonio is still in park more than a week after heavy rains on a Monday night shoved one of its empty cars off the street and into a nearby waterway. No one was injured, but the shutdown has become the longest local pause since the company first started limited rides here. Riders opening the Waymo app this week are still met with a blunt “service is paused” message.

What Waymo and the city say

In an emailed statement to the San Antonio Express-News, Waymo said the car "entered a flooded roadway and was pulled into an active waterway." The vehicle was unoccupied, and the company said it worked with local teams to recover it.

According to the San Antonio Express-News, a city spokesman said Park Police granted Waymo access to the Greenway Trail system so the company could retrieve the car, while the San Antonio Fire Department reported it was not involved in the recovery effort. Waymo added that it is “thoroughly reviewing” its flood-monitoring mitigations and will only flip the switch back on when it believes service is safe.

Where the service runs and how this hit riders

Waymo launched a limited driverless service in San Antonio in February, then widened its footprint on March 31 by adding pickups and drop-offs at San Antonio International Airport, according to TechCrunch. That expansion brought the company’s growing fleet into a mix of neighborhoods and airport traffic across the city.

With service now paused, that local network is effectively offline for everyday riders and air travelers who had started using the robotaxis for trips to and from the airport. Waymo is continuing to run robotaxi services in multiple Texas cities as it scales its operations nationally, but for San Antonio users the cars are temporarily out of circulation.

Regulatory watch

All of this is playing out as federal oversight of robotaxi behavior tightens following a series of high-profile incidents. The NTSB and NHTSA have been monitoring problems that include automated driving system vehicles passing stopped school buses and a child injury in another market.

As outlined by the NTSB, regulators have opened preliminary evaluations into those cases, and Waymo has issued voluntary software recalls tied to the probes. The NHTSA has not said whether it will open any investigation specifically into the flood-related washout in San Antonio, according to the San Antonio Express-News.

Flooding and local context

The storm that triggered all this was no drizzle. On that Monday, several inches of rain fell across San Antonio; KSAT’s weather team measured 4.42 inches at San Antonio International Airport during the event.

Meanwhile, short clips and social posts showing robotaxis behaving oddly have been feeding neighborhood skepticism. A recent Hoodline piece highlighted a wrong-way robotaxi near an elementary school that rattled parents and added to the sense that the technology is still finding its footing. Together, the flooding mishap and those viral moments have amplified calls for clearer data-sharing and more direct lines of communication between cities and robotaxi operators.

Waymo has not offered a firm timeline for resuming rides in San Antonio, and city officials say they are still documenting the incident while coordinating with the company. For regulators and residents watching closely, this pause is shaping up as another test of how quickly commercial robotaxi operators can adapt to rough weather, flood-prone streets, and local traffic rules. Expect more details to surface as police records and recovery reports are released by the company and federal safety agencies.