How to build a track with a small electric motor to move something around a circular track?
I'm a college student in charge of building a float for our homecoming parade. The theme for the float is mario kart, and the design has a track with moving carts going around a track. What is the best way to make a track with powered cars moving around the track? A generator with household voltage will be used to power the track/cars. I know I will need to transform from 120V AC to something else, probably 24V DC from what I have read so far. I don't know much about electricity and the other forces at play in designing such a track, so any detailed information or reference material would be appreciated. I have attached two sketches of the float design, one of which is to scale.
Any suggestions would be helpful. Diagrams would be very helpful as well.