> because they never tire and they never break traffic rules and thus never cause accidents No, because they never tire and almost never break traffic rules in

> because they never tire and they never break traffic rules and thus never cause accidents No, because they never tire and almost never break traffic rules in dangerous ways, and thus cause accidents much less frequently than humans. Realistically, this means that instead of following the speed limit they'd follow speed limit + X, instead of keeping the prescribed distance they'd keep whatever distance human drivers typically maintain (while still keeping enough distance to react and stop), and it also means rolling through 4-way stops when they have sufficient confidence that it is safe to do so.