Test #3

Hypothesis: If a balloon is used as a rubber band around the wheels (CD's), then there will be greater friction

Procedure:

1. Cut top and bottom of balloon off
2. Cut what's remaining of the balloon in half
3. Stretch "rubber band" around each wheel (CD)
4. Repeat steps 1-3 for other set of wheels

Results:

When the "rubber bands" were put onto the CD's, the vehicles acceleration slowed down. Also, a forward force was necessary to get the car moving. The distance covered by the vehicle also decreased. 

Conclusion:

While the rubber band did indeed create friction, it caused the vehicle to slow down excessively. The hypothesis was proven correct, however the balloon rubber bands had a negative impact on the car. This leads to the conclusion of not using the balloon rubber bands on the wheels (CD's).