So basically I've been given a task to do. I have done lots of research, but I also think that asking the perspective of other people would be a good way to brighten up my ideas and options. Simply, my task is: Develop a vehicle, where the only source of power is a rubber band. The vehicle will have to carry a load (around 2kg) and must cover a distance of at least 1 meter. Thoughts and ideas on materialsto use, physics to consider, and other useful advice would be GREATLY appreciated (: Thanks in advanced!