OpenAI founder Sam Altman's sprawling network of investments

The self-driving car company went through Y Combinator when Altman worked there, and he made a personal investment in 2015. The next year, General Motors acquired the start-up. Cruise is now one of the most prominent self-driving car companies, and it was the first to provide a driverless ride-hailing service in San Francisco. But the company is now in crisis. In October, a human driver hit a pedestrian, flinging her into the path of a Cruise car, which then rolled over the person and dragged her for 20 feet. California authorities accused Cruise of trying to cover up the details of the accident.