It was difficult coming up with a concept for our 'robot'.  At times, the possibilities seemed endless, while at other times, the possibilities seemed constricted.  Our resources and materials were limited, but our group handled well and went to a shop to explore more options for materials.  We hoped to find inspiration through materials we would see at the shop.  Eventually we found something that caught our attention, and seemed feasible to construct with the limited time we had.  We had found miniature toy cars!

We had a really great time constructing the pulley system, which activated the race. The cars were sitting on a thick piece of presentation paper that was tilted at an angle. In front of them, there was a small plank that prevented them from rolling forwards down the race-track. We hooked a clothes-pin onto this plank and constructed a pulley-system with a string tied to the clothes-pin. The pulley system was attached to the motor that turned on by the detection of sound. Thus, when a person standing near the track clapped or yelled "Go!" the plank would be lifted, and the cars would begin their race down the track.