Durham Fox
El Dude Brother.
You do seem to be hung up on motorways. Have you never seen people travelling at 70+ on any other roads.
Anyway hills wouldn't be insurmountable - they probably wouldn't even be that much slower with the technology we have today. still I don't care people would be forced to drive more slowly - I'd make it that cars couldn't go faster than 50 and were all water driven. People would then just have to allow more time for travel - it used to take longer and our lives were not significantly worse.
Perhaps we could turn off the electricity, water and gas supplies too? After all we managed without it once. Who needs all this progress huh?