The same city that converted a used Tesla Model S into a police car is shuttling its city employees to work in self-driving cars.

China- and California-based Pony.ai launched a self-driving car pilot program in Fremont, California, on Tuesday. If that city sounds familiar, it's where Tesla built its very first factory. One of Fremont's police cars is actually a Model S.

Now the city's employees can snag a driverless ride to and from the city's Amtrak and train station to city hall and other city offices. It won't cost them anything to be part of the pilot program.

Mashable Light SpeedWant more out-of-this world tech, space and science stories?Sign up for Mashable's weekly Light Speed newsletter.By signing up you agree to our Terms of Use and Privacy Policy.Thanks for signing up!

The rides in the marked Pony.ai cars —which are outfitted with sensors and cameras on the roof — are only available to a select group on the Fremont city payroll. Also, the robotaxis aren't completely driverless yet. A safety driver will be in the front seat monitoring the ride and equipment.

SEE ALSO:Self-driving Waymo minivans will assist UPS with deliveries

It's similar to the on-demand robotaxi service that Pony.ai launched in November in Irvine, California, which is mostly used by students. Pony.ai also operates autonomous services in Beijing and its home city of Guangzhou, China. It's U.S. headquarters is in Fremont.

Why offer free rides? It helps the company test its tech and establish itself as an industry leader outside of China. This is Pony.ai's first public deployment in the AV hub of Silicon Valley where Waymo, Cruise, and others are actively testing autonomous taxi fleets.

TopicsSelf-Driving Cars