The 2WD (2 wheel drive) smart car kit can be purchased from Ebay for $14 with free shipping from China if one can wait for 9 days. The kit contains all the parts needed to build a 2WD dumb car, since there is no microcontroller. The body is clear acrylic sheet that comes with protective paper that can be removed during construction. The kit comes with assembly instructions in Chinese with pictures. The pictures along provide enough direction to assemble the parts. The motor gear shafts were oiled to reduce friction.