Sounds like BottleBob's dream
Some people from the factory where I work were sent to Germany for a business trip. They told about traveling on the autobahn in their rental car. They said all their car would do was 120mph and they were being passed like they were standing still.
Wikipedia has some info on the Autobahn
I just thought it was a neat idea, if we had some super interstates in the US where you could legaly drive 100+ mph it seems like it would cut travel time a lot. A person could drive as fast as most private planes can fly.
RogerN