More than 20 auto, tech and supplier companies have permits to operate self-driving vehicles in California. By comparison, Waymo, formerly the Google Self-Driving Car project, logged 635,868 autonomous miles in California in 2016. To be sure, the report reflects a small portion of automated drive data Tesla collects, as it doesn’t represent Autopilot miles it continually logs from customers’ vehicles. General Motors, Nissan and Delphi logged the most California miles after Waymo, reporting 9,776, 4,099 and 3,125 autonomous miles, respectively. Much of Tesla’s advanced autonomous system tests aren’t done on public roads and the company's report said it's making use of test tracks and roads in other parts of the world, without elaborating.

Source: Forbes February 01, 2017 21:04 UTC