The hasty send-off from the studio was the most surprising and disorienting part of the WWTBAM experience for me. The Town Car ride home acted as a nice buffer--man, would it have stunk to just get back in the subway!--but it was a quick sendoff from the studio.
(Don't even get me started on the driver's inability to follow directions!)
But, hey--it was an experience not everybody gets to have, and I'm glad to have been there.