I liked the ending, but just a second... did the main character actually say "in 1990, we're gonna be 21 years old" in 1978? That would make him 9, and he was

I liked the ending, but just a second... did the main character actually say "in 1990, we're gonna be 21 years old" in 1978? That would make him 9, and he was dreaming about driving around visiting never-ending orgies in future pleasure domes? Well, I guess some kids grow up earlier than others ...