Google reveals the software behind its self-driving cars

Google's sister company Waymo has kept the software and testing it is using to develop self-driving cars under tight secrecy - until now. For the first time, Waymo, the firm's autonomous research sister company, has opened its doors to reveal the'Carcraft' simulation software and Castle, a secret training center on an old Air Force base in California. Castle is a 100-acre hidden mock city that can quickly be configured to test different scenarios and includes residential streets, expressway-style streets, cul-de-sacs, parking lots, and more. For the first time, Waymo, Google's sister company, has opened its doors to reveal its technology and discreet training facility called'Castle' that resides north of the Merced metro area where the Castle Air Force Base used to be. This image shows a roundabout on the site Waymo built after encountering it in Texas, and the car struggling.