How do I build a mousetrap car and what supplies do i need?

first I would get 4 plastic bottle caps from lets say water bottles, drill a hole in the center of 2 then face the open ends together of 2 and put some glue on the facing edges so they stick together then put a screw through them making a wheel make sure the hole is large enough to ride loosely on the screw. Screw it on the front left of the mousetrap. Repeat on the left side. If you dont have glue then use some silly putty to fill them to stabelize them. Then you need to make a drive system. I would take some cardboard or plastic from an old milk jug and cut two exact shapes and staple them or use small screws and screw one on each side of the back of the mouse trap creating an axle mount for your rear axle. Make a hole in each rear mount to pass a pencil. through it. take the cds and make a hub for each using some playdo or you can jam a piece of carrot into the center or something hard that the pencil can support the wheel and not spin inside it. Take a rubber band and cut it so ...  more