September 12, 2018—Apple keeps adding autonomous vehicles to its test fleet in California, boosting its ranks 27 percent since May, according to records from the California Department of Motor Vehicles (CA DMV), reported TechCrunch.

The company now has 70 autonomous vehicles permitted to test on public roads, Mac Reports first reported. The permits, which are issued by CA DMV, require a safety driver to be behind the wheel.

According to TechCrunch, over the past 18 months, Apple has gone from just three autonomous vehicles to 27 by January, 55 by May and now 70. GM Cruise has the most permitted autonomous test vehicles at 175, followed by Waymo with 88. Apple has the third-largest fleet.