I dunno if anyone has seen these. I just stumbled upon one whilst searching for solar stuff on craigslist. I have no idea if its effective at all, but its a neat idea.
Looks like there are at least two kinds out there. Same idea each. Solar panel powers a squirrel cage fan that blow air out of the car from a cracked window. No ratings for max CFM or anything of course...
when I finish the new body for my citi-car, I want to make the roof out of pv (have 5 10 watt, 12 volt panels already for the task) one of those panels I would like to hook to the vent fan, to pull air from under the car in to the cabin.