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I hate getting into a hot car that has been sitting in the sun
all day. Why can't cars be built with a vent that
expells the hot air?
I am imagining a vent positioned on the roof (sufficiently
protected to keep out rain, prying hands). When the
temperature of the
car gets over a certain amount, the
opens and fans blow the hot air out.
To conserve energy, this whole system can be powered by
roof-mounted solar panels. This works well since if the sun
goes away, the car doesn't need to be vented as much.
A widget that fits in a slightly rolled down window, with a solar powered vent fan. [StarChaser, Mar 19 2001, last modified Oct 21 2004]
||Sounds good, except for the solar panels, which would get damaged too easily by hail or
snow/ice removal in winter.
A highly reflective roof might do a good job of not absorbing the heat in the first place.
||How about an awning-type attachment that you install in summer? Or a super-strong fan
that you could activate from outside the car for a few minutes before you got in?
||Can't you coat the solar cells with some sort of transparent material to minimize damage?
||Newer Mercedes & BMW models will cool/heat the car prior to entry. (...Peter, since you're up, could you get the links for these? Thanks.)