Get your windows tinted and leave em all down like 10mm. Makes a massive difference. I leave my black Galant in the sun everyday fo the week.....the worst so far is me literally burning my hand on the wheel. Blisters and all
It must have got fucking hot in there!
i was told by some guy, never use stuff on ur dash or any plastics for that matter. in the sun it cooks on the plastics.