Yeah, I want to see the numbers run by somebody who knows what they are doing. Still ain't no free lunch, and the laws of thermodynamics have not been repealed.
What I have always wondered about would be using waste heat from the exhaust to run an absorption unit. Same as an RV refrigerator that runs on propane. Exhaust heat is truly waste and stealing some of it to run an AC unit should have no effect on fuel consumption.
Too sensitive to motion.