To achieve a fast, light weight vehicle to travel 20m my partner and I chose to use blue foam and perspex to create our form around the electronics that we were required to wire together. The electronics had to work safely and were run off 2x AA batteries, and power LED lights and a YM2707 Motor 1.5-4.5V DC.
In the image above you can see details of the wheels, where we applied elastic bands around the wheels, as they were so fragile and light we felt that this would help ground the vehicle. We discovered when we removed the elastic and the front guard that infact our vehicle went even faster!
We came to this form through discussion and using SolidWorks to help us understand more about the shape and size of the form.