Comma.ai, the startup founded by hacker George Hotz, is facing a federal investigation after five reported crashes involving the company’s aftermarket hands-off driver assistance tech, two of which resulted in three deaths. The National Highway Traffic Safety Administration’s Office of Defects Investigation (ODI) said this week that the reported crashes involved Comma.ai devices failing to detect or respond to slow or stopped vehicles in the same road lane. Across four of the crashes, as many as...