a abychom se jenom nehádali
How much hotter is a black car than a white car in the sun?
http://www.tom-morrow-land.com/tests/cartemp/
Executive Summary:
For those who just want to know the results of the test, I'll tell you. The glass temperature (which I assume to be a proxy for interior temperature) varied only 5 to 6 degrees between the black and white cars on average. So I conclude that the interior temperature only varied somewhere in the neighborhood of 5 to 6 degrees. The paint temperature, however, varied by about 55 degrees, which is ten times as much. So it is indeed true that black paint is much hotter than white paint, but the interior of the black car isn't that much warmer than the white car.
Vliv velkého teplotního rozdílu venkovního povrchu na vnitřní je zanedbatelný, protože střecha je, světe div se, izolovaná :-)