You can only use cardboard, metal, tape, glue, and rubber bands.Entire vehicle can't weigh under 300 grams, nor be more than 350 grams.Materials that can't be used:-CO2 cartidges -music box motors-any plastic or wood items-erector set piecesGoal: Getting the self-propelled car to travel the furthest distance (flat travelling surface) before coming to a stopThe track being used is 4 meters in width.
My first thought is to make it long and thin, for maximum length of rubberThe frame has to be aluminium tube, to be stiff enough to take the loadThe real worry is going to be the wheelsIf you can't use plastic or wood, they are going to have to be multiple layers of cardboard or cardboard stiffened by metal ringsIf corrugated cardboard is permitted for the wheels, then you could even consider putting a rubber band tyre round the wheel, which would work wonders for the tractionGood luck.
