My alternative energy vehicle was very difficult, we thought it would be easy to just put a mouse trap on wheels, but it harder than that, we originally going to use 4 wheels on the prototype, but then there wasnt enough room on the axel to we went for one wheel in the front, but the caused another problem the wheel wouldnt get power because the string would scrape against the body, fast forward the current car and its the 4th attempt and its perfect. compact, fast, stable, and more

Power source:

The car uses rubber bands instead of the original idea of a mousetrap

  her is the link to my presentation: 

https://docs.google.com/presentation/d/1B8eipjls38YrnJzTvq7l3MRH09Pri-ROUm9BjL3lb2Y/edit#slide=id.g31d92675f44_0_33