They are air-conditioned seat covers. I have used one before on a long trip with someone else, kept you nice and cool in the heat. He doesn't remember where he bought it from, and I could only find them in the U.K. on various sites ... here is one to show what it is ...

http://uk.bizrate.com/buy/noncat_pro...372481668.html

It is better than the one I used, it only had the bottom cooled ... I think this would be a great assest to those who like to drive with thier a/c off for hypermiling purposes too. It really does a great job at keeping you cool Thanks for any help!