The company has now confirmed to Electrek that they are also testing the fully self-driving system “in a number of locations” other than California’s public roads:

“We also conduct testing in a number of locations that are not public roads in California.”

Now that can mean private roads in California and public or private roads anywhere else. Several other states have introduced rules to allow testing of level 4 and 5 autonomous driving system. Nevada and Michigan have been the most popular ones after California. Tesla refused to elaborate further, but it clearly hints at more actual road testing of its fully self-driving technology beyond using the data from its Autopilot fleet.