A rubber band powered Lego car - fun! The post shows two different ways to build one. Dont know where to go in 3 days very limited funds. Fun project for a Lego party, or to do with friends.
Two Ways to Build a Rubber Band Powered Lego Car - Frugal Fun For Boys
Easy STEM experiment to study potential and kinetic energy.
A rainy afternoon and a restless boy is the perfect condition for creating a balloon powered Lego car!
Build a wind powered LEGO car. Awesome engineering project for kids!