its just a theory... edit: since the pic wont work: http://www.google.com/imgres?q=magnet+car&sa=X&rlz=1W1TSHB_enUS321US321&biw=1024&bih=400&tbm=isch&tbnid=zOl-CsDpXxMsGM:&imgrefurl=https://forum.kag2d.com/threads/can-you-make-a-car-out-of-magnets.6679/&docid=byVVhJ_um7k_9M&imgurl=https://forum.kag2d.com/attachments/tumblr_lbp158unxw1qehfnho1_500-jpg.6746/&w=492&h=428&ei=swnDUeG_NJHU8wS62oHoDQ&zoom=1&iact=rc&dur=50&page=1&tbnh=161&tbnw=235&start=0&ndsp=5&ved=1t:429,r:3,s:0,i:143&tx=118&ty=96 long link