Like you say, Trish - there's not much to prevent someone hot wiring a cart......if they want to take the time to do it. The "unique key" helps but a diligent person can bypass the key.
Yamaha carts have VIN/serial numbers on them but those are on a plate or sticker that could be removed. Not sure if those numbers are stamped anywhere on the frame. Obviously, that won't prevent the cart from being stolen but it would aid in the identification of your cart should it be recovered after a theft.
Bill
