When we finally finshed we tested it out we were so happy. The first went but then we realized posing a ballon would be to hard so changed it to knoking over cups. We couldn’t hit with only a marble so we are finding a ball with more mass. When we were seeing if it worked. Were on that spot for about 20 minutes. Then the second fail was terrible. The car just fell off. It took us about 25 tries. I was so happy that I could go home. That was so fun.