better take it back, simplify more before you hit the pedal..the combustible liquid called Gasoline, can move anything. get a can pour some on the ground and include a trail back to the can, go to beginning end of where you started pouring, light it....wha-la! your running!!! anyone else in the area is running too. after you here or see the boom and its over. Picture that in a small circular area inside of a engine, which is built on a axis, said combustion turns that axis, attach anything to that axis and its moving rather, it be a clutch, tranny, etc... in any combination as long as it ends at the tire and attach those to any structural form, as long as the last thing turning is the tire and its touching the ground you get motion. unless you use the old square tires, then you get slow motion.