I am not 100% sure of all my science here, but the basics are as following:
1) A WHITE car looks white because it does not absorb any of the visible light spectrum, and reflects the entire visible light spectrum, thus the car 'looks' white.
2) A BLACK car looks black because it absorbs all the visible light spectrum and reflects none, thus the car 'looks' black
I think this was 5th or 6th grade science. This may have something to do with a white car being less hot.
As far as the non-visible light spectrum's effect on heat...I'll defer to a more knowledgeable forum member!!
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