[Nightmare]

Hmm, I still don't fully understand it haha, but I guess that could very well be what he meant.

I could be entirely wrong (I don't see the relevance either), but I can't put It to anything else.

Perhaps he means that he will be able to send it to a PO box a while away from where he lives with his parents, and take the car there to get it, so his parents won't notice the package?