When Lightning McQueen helps out all the cars in the town he has Ramone give him a new paint job which looks somewhat "1950"ish with large white designs on the side containing lightning bolts. When he gets to the Piston Cup race-off he is back to his previous paint job. At the end of the movie when he meets Sally at the Wheel Well Motel he is back to the 1950 paint job. How did all this painting and un-painting occur?