Yeah, I know, and my new Avalanche six speed Allison gets 16 MPG, but my neighbors 4 speed gets 8. I just heard that one!
I got a lecture from my accountant when I sold a big building with little mortgage and went shopping for a cummins 4x xtra cab, long bed, and she explained, in no uncertain terms, that the Gov gives mileage deduction against business use. You get the GREATER of the two. So my wrecks actually MAKE money. The $40 beast costs $28G's. So I bought a couple more Straight axle Chevs. And a few more, and a few more.....