I have a small generator, and I also have built an A/C carrier bracket for the passenger window. This is all fine when parked (and I try not to spend much time in places where A/C is a daily use item). However, my cooling (burning?) need is while driving. 

I just contacted the Vintage Air people about Vanagon installation. As for evaporative cooling, any listmembers familiar with swampy.net units, or recommendation for better? 

Cut hole in roof vs. tear apart dash. Hmmm.