My truck has already made up the difference in fuel costs between it and my previous vehicle, a consistent 28-29 MPG Dodge Caravan.
Sure, I used the Caravan to haul things as well (check out my albums), but the truck can haul SO MUCH more. Like half a cord of wood. TWO lawn tractors (and a trailer with 5 more on it). I can haul motorcycles without having to lower/remove the handlebars or other parts... and so on.
I went from 28-29MPG down to something like 17 (hard to keep accurate track because I'm going tank to tank... I only drive it when I need to.)
Oh, and my insurance went down $20 a month, as well. Guess that makes up for the fuel costs, a little.
I do have a Diesel Golf, that as soon as I get it on the road, will get a trailer hitch put on it, and stiffer suspension. Why? Cuz I'd be willing to bet that Diesel Golf can handle a 1,000 lb tow load just like my truck can... except it can get 40+ MPG of nearly free fuel doing it.
I only with it was a turbo...