[Diesel_Dave]

It's been pretty hot here in Indiana recently (up in the 90's), and I've been doing without my AC. Usually, it's hottest when I'm leaving work. Here's what I do: Before I start I open up all the doors on my truck for a minute ot two to let it air out (just a minute or two makes a big difference). My first 5-10 miutes are in town, averaging ~20 mph so I crank down my driver's window most of the way. At the slow speeds I figure it's not going to make hardly any difference on aero. Once I get out of town (assuming it's still hot) I just roll down the driver's window an inch or so. For me, that blows air right on my face, so it's not that bad. I'm sure that does hurt my aero just a little bit (although I can't imagine too much), but I'm pretty sure it's a lot less than using the AC.