Tell me something. I parked beside a truck the other night and he had his apu running and it was so noisy and it "stunk". The exhaust or fumes from it was making me sick and I finally had to get up and find me another spot to park. So, the question that I would like answered is, why are those units so noisy and loud, plus why isn't the exhaust piped through the exhaust on the truck so that the exhaust can be expelled into the air??

Before I would go and spend 7 to 10 thousand dollars on this type of junk, I would certainly be investigating other ways to cut down on my idling.