[Nightmare]

I don't know what a car has to do with this, but why don't you just tell them you bought it or won it in a giveaway or something?

I can't have it sent anywhere besides my house, because I can't pick it up myself.
So the only place I can have it sent is my house, and I doubt my parents would approve of me SEing Amazon.

You could just tell them you won an Amazon giftcard in a giveaway/contest, which is what you bought it with.