fair enuf...
my idea was to use a "pelter" device... if you haven't heard of these before its a plate made of a mix of N type metals and P type metals... when a current is passed through these, all the heat is transferred to one side... it is regularly used to cool PC's at the moment... most nowadays have the ability to create condensation on one side, and some can even freeze the condensation... maybie not as a complete replacement for an IC... but an adition to it... the only thing i can see being a problem is the possible addition of another battery/alternator adding weight...
if you want more info on a peltier
http://en.wikipedia.org/wiki/Peltier-Seebeck_effect