Rubber band powered rolling device from a coffee can

[SMB20]

Well i have been assigned a project in my physics class that is totally clueless to me so i have come to all you smart peoples to help me with it because I am like totally clueless of what to do...

I am to create a rolling device powered by (a) rubber band(s) (no engines, etc)

Guidelines...
-- The tin can has to be a coffee can or similar
-- The rolling device has to be powered by (a) rubber band(s)
-- To make the rolling device operate, you may adjust, wind, etc. the rubber band
-- You may use other material to help your rolling device operate

Anybody have any idea on how to make something good? When we test these in class, we will be looking for speed and distence.

Please help
Thanks
Josh

 

[Math Is Hard]

You might get some inspiration looking at some of these "balloon cars" from a contest that was held at JPL:
http://www.balloonhq.com/balloon_car/balloon_car.html

 

[SMB20]

Ah nice find man, thanks a lot!

I'll check that out right now :)