This week in science class, we created balloon powered cars, and I failed big time. The first version of my car was built using a can as the body and CDs as wheels. That car had too much mass, so it wasn’t able to move. The second version was made with a water bottle as a body, and once again, CDs as tires. The CDs wouldn’t turn, so we had to restart. The third car had a cardboard body and water bottle caps for wheels. It moved, but the balloon weighed it down, so we were back to square one. My final design had a water bottle body and water bottle cap wheels. This one finally moved, and it didn’t break once. Throughout the entire trial and error process, we had finally found a design that was efficient and worked.