Well, I think there are reasons science took off so strongly in Britain. I think culturally there is something which has fostered this drive to understand stuff. Certainly other societies have it too. But it would be hard to argue that Britain hasn't been in the thick of things as far as scientific inquisitiveness is concerned.
So I can only imagine that when something like driving is mulled over in the places where they mull things over - that learned people aren't brought in to help set up the systems. So if someone in that room said, "Well, the yanks just use a car-length for every ten miles an hour...", there is probablly another person saying, "Hmmmmm, but in actuality according to Newton that doesn't work out....there is clearly a multiplier in the mix".
They are right....but then we are left driving along doing algebra...