Not even sure how you would convince them. Full code and database audit isn't easy nor cheap and I doubt Uber wants to pay for that. Apart from that, there's no way to detect if Uber runs services to detect regulators.
Oh, I agree it's totally impossible, and the only solution is to not attempt to evade regulators in the first place. Otherwise you end up like Uber:
> We know you've evaded regulators in these cases, in other markets. How should we know whether we don't have evidence of you evading us because you successfully have or because you haven't used it here?
We didn't use it here.
> You said that in the markets where we have clear proof you used that, why should we believe you?
