Incorrectly regarded as goofs: Lightning has a full re-spray just before he leaves Radiator Springs, including white sections with a yellow lightning bolt. But when we see him in the race, he's back in his old colors, and when he gets back to Radiator Springs he's in his new colors again. Evidently, cars change their paint job as readily as humans change clothes, which Ramone demonstrates repeatedly throughout the movie. McQueen's changes are consistent with the plot and the character - he likes his new paint job, but can't use it in a race, because it doesn't feature his sponsor's ads, in particular.
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