Can you be absolutely certain that self driving can deal safely with every possible road irregularities, obstacles, bad, incomplete, damaged or tampered road signs, and other unpredictable events? Self driving on public roads done right is damn hard; probably harder than sending a manned but completely automated spaceship to Mars and back.
We're talking about perception. Regardless, Tesla won't release the data per mile driven and seems to be dodging reporting regulations -- if not daring regulators to respond.
Feels to me like amateurs (backed by a small army) confidently building bridges and daring the community to try and stop them. (Except Tesla's army are fan boys, lobbyists, and lawyers.) So basically speed running a millennium of civil engineering, except ignoring the more expensive safety controls; like LIDAR.
