Revealing mistake: In the disco scene, the DJ is playing music, but the Pioneer decks and the DJ Mixer are not even turned on, as no lights are showing.
Revealing mistake: When Sean and Clay race, Sean drives from the dirt road to the paved road, and skid marks from a previous take are visible. (00:06:46)
Answer: I believe he says 'find another driver'.
He says something before that. It sounds like he says "or gothica".