Hey there! I need to make a battery powered dragster for my physics class! Here are so requirements... Only AA batteries, but any number is allowed. Only commercial motor and gears are permitted. Everything else on the car must be materials not meant for their use (ex. car wheels must not be wheels. They can be thread spools or CDs, etc.) Any ideas as to how I could make this work? Or what's the best engine to use? My partner and I took an engine from a AA battery powered RC car at the local toy store. Are there any faster ideas, though? I'd appreciate it. Thanks! :)!