I've only had experience with the commercial truck units. Sometimes they're a package unit on the back or roof of the cab. Other times they're a split unit with the compressor is under the sleeper.
Anyhow, I do remember seeing this company several years ago. I saw a compressor in the truck of an old Studebaker. As far as perfomance goes, etc... I can't say. If you look on their website, they say 30-50 amps current draw, again that means a large alternator.
http://www.cruisencomfortusa.com/hot...6m4hsq0il6u26z