Vogt’s resignation follows a tumultuous few months for the General Motors-owned company. Last month, a jaywalking pedestrian was struck by a regular car and then flung into the path of a Cruise autonomous vehicle, which rolled over the woman and dragged her about 20 feet at 7 miles per hour. In its investigation, the California Department of Motor Vehicles said the company posed an “unreasonable risk” to public safety.

In posts Sunday night on X, formerly known as Twitter, Vogt confirmed his resignation and said he was “grateful to everyone who helped Cruise along the way.”

“The start-up I launched in my garage has given over 250,000 driverless rides across several cities, with each ride inspiring people with a small taste of the future,” he wrote. “Cruise is still just getting started, and I believe it has a great future ahead.”

Earlier this month, the company issued a voluntary recall of 950 of its vehicles nationwide after the collision with the pedestrian in San Francisco and signaled layoffs could be coming.