There are a couple of existing questions about riding bicycles off of Earth.
Bicycles are lightweight and proved a reliable method of using leverage to multiple the speed and/or power potential of the human body.
In a low gravity and low atmosphere environment how could I make a bicycle like effective transportation. This answer by Loren Pechtel suggests multiple magnets in the wheels and a steel track. After considering it for a while, I wondered if a single round magnet in hollow wheel might work (the magnet would roll inside the tire, a single magnet per tire should maintain grip)
Then I got wondering about a cable system... Where the cable was your road way, similar to a gondola but without a central power source.
How could you make an effective very low gravity bicycle and roadway?