[xfs]

Note that I was comparing with Google's methods of testing self-driving cars: idle roads, good weather, precision maps, human monitoring, no accidents. If Google's miles of safe driving mean anything, if means it has 99% more miles left before a level of validation. If you look at it for the effective miles where actual accident recovery happens, it will be much much shorter.

And yes, UMich/Ford's self-driving car project is making a testing field specifically designed for increased hazardous environment. But that environment is always artificial, and the hard part is to catch the last 1% situations, or the last 0.000001% in order to reach a level of billion miles safe record, because you don't even know what those are.

Autonomous navigation is fancy on all side (Yes I do this research), but all field experts know any security audit can probably reveal a bunch of failure modes because nobody has really worked on making it robust again adversaries.