Here is the mousetrap race car I built with Karla. The frame is built out of LEGOs, the back wheels are an electric wire spindle cut in two, and we used a rubber band connected to the mouse trap as the engine.
 
 
 
 
It goes pretty fast, but we over-wound the rubber band for the official race and came out in 3rd place.
this is a good website it helped me with my 8th grade project that i had to do on a race car made froma victors small mouse trap…