Undisputable? Let's see what happens with the average "accidents per km" these firms keep touting once we let a bunch of self-driving cars drive on the ring around Paris or Antwerp.
Why would that be different from anywhere else? Highway driving is easier than city driving since it's more predictable.
So your only dispute is that you have no dispute, only the idea that things might change in the future, and some hypothetical dispute could emerge. Got it.
Seriously? You are claiming something is "undisputable" without citing any source or making any attempt at all to explain why that would be. I guess we really do live in a "post truth world" with people like you.