My Final Balloon Car (Jacob)

Kay so like everybody else, i made last changes. Well not really, I made a completely whole new car since the other cars we made failed. This car took me 4 hours and a little help from my parents. The materials I used were: Balsa wood (light and thin wood), plastic wheels, tape, balloon, and straws. This car turned out to be the best out of all 4 we've made but there is only one problem. It can cover the distance required but the car cannot run straight. There is no picture available because Francis has the camera. lol!