I love that episode. The best part is that HC doesn't really have a plan for their interior and the other team has an interior guy...er kinda... He throws up and gets sick in the middle and doesn't finish the interior. HC is discussing interior and they are all like, "we don't know how to make an interior; let's fab one out of sheet metal." They do and that was the tipping point. Its like a cool custom bomber interior and the host loves it.
Rumor has it that the car is FAR from finished. Yeah it was hot wired for the show, but I think everything was finger tight and hot wired. They got to keep the car though!