Comma.ai cancels self-driving car device after warning from U.S. regulators

(Reuters) – San Francisco entrepreneur George Hotz was so confident in his self-driving startup Comma.ai that he had T-shirts made that boldly proclaimed: “We are gonna be so rich.”
But U.S. federal highway safety officials this week forced Hotz to slam on the brakes, veering into a sudden detour, on the road to those promised riches.
In a letter and order on Thursday, the National Highway Traffic Safety Administration (NHTSA) demanded that Comma.ai provide proof to regulators