MOUNTAIN VIEW, Calif. – Self-driving cars of the future may not be too far off. Google announced in a blog post last week that a few prototypes of its autonomous car will be hitting the road this summer, literally, and test driving around the streets of the company’s California headquarters.

“We’ve been running the vehicles through rigorous testing at our test facilities, and ensuring our software and sensors work as they’re supposed to on this new vehicle. The new prototypes will drive with the same software that our existing fleet of self-driving Lexus RX450h SUVs uses. That fleet has logged nearly a million autonomous miles on the roads since we started the project, and recently has been self-driving about 10,000 miles a week. So the new prototypes already have lots of experience to draw on — in fact, it’s the equivalent of about 75 years of typical American adult driving experience,” Google writes.

Google’s autonomous vehicles won’t be able to hit the freeway, however. The company is capping the vehicle speed at 25 mph, and “safety drivers” with access to a steering wheel, gas and brake pedals will also accompany each ride.