Obviously the OP has purchased a Prius originally equipped with a 63lb Trunk Monkey, that has jumped out of the rear hatch and ran away to the circus. Just leave the hatch open at night and some bananas in reach and he might return, otherwise enjoy the additional 63lbs load capacity... Seriously, interesting sticker...but I wouldn't worry too much about it, 63lbs one way or another isnt going to make that big a difference. Unless you plan to be pushing the max of your load capacity for extended periods of time.