Electric Car Idea
Here is a kernel of an idea I want to put out there. The idea is based on toy slot cars. Long highways can be installed with electrically charged tracks embedded in the road. Electric cars would drop an electrode that would use the electricity. Electric cars could go longer distances and even charge while they drive. As cars enter the highway ramp they would get tickets like on a toll road and pay as they exit.
There is also the possibility to drive on auto pilot on these highways. The car would use the track to steer. Distance could be maintained with sonar and speed control. Passing would still be possible by lifting the electric electrode and driving normally.