4/30/07 Ideas and Not A Single Rubber Band

My father and I talked about what to do about the rubber band car project. We talked about the main issues such as the frame, aerodynamics, wheels, and the capacity to hold one kilogram (2.2 pounds). We thought of a possible way for the wheels to spin smoothly as if they had bearings in it. Our only major problem is what to make the wheels out of. I do not want use the materials the old classes used or those seen on the internet for the wheels. I am going for creativity here.