> Different speed limits for different drivers could result in a "lower-class" driver being an obstruction for others. I don't think that would work out

what i'm really saying is that you should be able to test for a higher speed limit in the US. slow drivers will be slow regardless of what the limit is, and unsafe. i've driven on the autobahn in the no speed limit sections (primarily around munich) and there were still slower, unsafe morons occupying lanes they shouldn't have been. maybe tourists.

remember, in the US we have very low speed limits of ~100kph pretty much anywhere. i think it should be higher. people routinely drive 145kph here in southern california, enforcement of 100kph is arbitrary, which is not healtyh for respect for the law in general.