A former Tesla manager who ran the company’s “Full Self-Driving” test fleet in Houston says the operation was so understaffed that its cars became “rolling hazards on public streets,” according to a lawsuit.

The manager, Javier Medrano, filed the wrongful-termination complaint in Houston federal court, and its contents were reported this week. He oversaw the fleet before Tesla launched its driverless “Robotaxi” in the city.