Rudolph W. Giuliani, the former mayor of New York and lawyer for President Trump, suffered a fractured vertebra when a vehicle slammed into his car on Saturday.

© Alyssa Schukar for The New York Times

Mr. Giuliani, the former New York City mayor and lawyer for President Trump, suffered a fractured vertebra, his head of security said.

© Jefferson Siegel for The New York Times

The company has devoted resources to autonomous driving rather than developing new models to attract car buyers.