I somewhat regularly drive through traffic that naturally flows faster than the speed limit. Those are hardly ever the drivers’ fault imo. The physical construction of the road should match its intended speed limit. You can’t build a long straight stretch of 3 lane road with no exits and merges, and still expect the people to stick to a 70kmh limit. The traffic will naturally flow faster than that if the road makes it too easy to exceed it. Those roads are usually intentionally made like that to be honeypots for the police anyway, at least that’s what I suspect.

Anyway, if my car was made unable to keep up with that, I’d be impeding the flow. That’s never very safe.

I don’t understand what American cars have to do with this photo. The only American vehicle in that UK parking lot is the white Tesla in the background to the right.