I'm an American driver that goes to speed limit almost always, I might occasionally go a few miles over to pass, if somebody is going under the speed limit I might pass them in the left lane, and the people that want to go faster can fuck all the way off, if I am passing I'm allowed to use that whether I am speeding or not.
I think people are just dumb about speeding, most not even having anywhere to be just giving into their base instinct because they have no self control. And in doing so making themselves vulnerable to the authorities and their tax farming.