Revealing mistake: When all four of the guys are driving the Volvo through Detroit, if you watch real close, sometimes you can see 1980's and 90's vehicles parked on the side of the roads. Especially when they show a long shot with an older mustang following them, there is what looks like (it's hard to tell) a newer Buick or Chrysler (like the 300m) on the left side of the screen.
Revealing mistake: When Jam answers the telephone he falls, and when the telephone falls too there's no cord in it.
Revealing mistake: When Hawk pukes on the stage you can notice in the side view that the puke is too much and fake.
Answer: It is the intro to Black Sabbath's "Iron Man".
Twotall