Take a drive down memory lane to see how the self-driving car has evolved over the years.
2009: The team started testing its self-driving technology with the Toyota Prius on freeways in California.
2012: Testing began with the Lexus RX450h, with the team logging over 300,000 test miles on freeways.
2014: The team shifted focus to city streets, a much more complex environment than freeways.
2014: The team delivered the first real build of its prototype vehicle, designed from the ground up to be fully self-driving.
2015: The cars have self-driven over 1 million miles and are currently being tested on the streets of Mountain View, California and Austin, Texas.