Please view my video response to see how to actually build the car.www.youtube.com/watch?v=XZ23q0QXPx0Card Trap Rubber Band Card Trick Revealed www.youtube.com/watch?v=OmkelvShvn8Hopkins engineering students race mouse trap contraptionsMechanical engineering students at Johns Hopkins University spent the past several weeks building devices out of mouse traps, rubber bands and other items.