I have an engineering design class and we have to design and build a car to race.
The car can be no longer than 12"
There can be no remote control
There can be no electricity involved at all
There can be no combustion engines
The car must start from zero, so no throwing or anything
It just has to go straight, no turns, and the car must stop on it's own, you can't touch the car until it stops
The car must track straight because it's traveled distance is measured parallel to a wall.
The person whose car goes the farthest gets a certain amount of points, and then everyone else gets a certain percentage of those points depending on how far their car went in relation to the winning car, ie, if my car goes 100ft and someone else's goes 65ft, I get all of the points, and the other guy gets 65% of those points for himself(not 65% of MY points.)
I was thinking building it out of legos or balsa wood(I have a **** ton of legos so that would make it free.) I was thinking of having it start with the basic rubber band twist drive shaft just to get it the first few feet. Then, try and get some magnets situated like an electric motor to keep it going as far as possible, or something that will store a lot of inertia from the initial spin of the rubber bands.
I just wanted to get the idea out there...I have to wake up early for work but my brain won't stop thinking of new ideas.