Our Dave Caolo likes the idea behind Disney's AppMates cars but felt the cost ($20 street price) was a bit steep for what is, essentially, a cheap car with a few capacitive pads. He challenged me to see if I could turn a basic Matchbox unit into an AppMate-compatible iPad accessory. I created an aluminum band around a Matchbox car's belly, attached two "pads" (folded Kleenex wrapped in aluminum foil), and ran the app in "Paper" car mode -- which requires only two points of contact on the screen at any time