The company has been testing the vehicles for the past six years.
Google’s self-driving cars have now hit California roads, with the company now having started testing of its car on Mountain View, where its headquarters is located.
The tests are being conducted on the same cars that were showcased in December, but are not completely driverless. The company has placed "safety drivers" in the cockpit who can take control of the car at any point.
The company also revealed that it has been testing self-driving technology for the past six years on Lexus cars equipped with the same software that has been used on the ones that are being tested now.
With maximum speeds of 25 mph in self-driving mode, the cars are also equipped with removable steering wheel, accelerator and brake pedals that can allow the driver to take control.
Previously, the search giant revealed that during early tests the car met 11 minor accidents since the inception of the project almost six years ago.
The company, however, clarified that none of the accidents were caused by its next generation vehicle, instead they were caused by the drivers of the other vehicles.
The search giant also launched a separate website dedicated to the next generation car after users complained that the company was being secretive about the project.