It goes without saying that there are myriad factors when it comes to a vehicle purchase. It’s not just fuel economy, size, utility and price. Sometimes it’s more complicated things like insurance rates, residual value, and tax incentives. It also has to do with leasing incentives. And it all may explain why so many people continue to buy full-size trucks, even if they don’t necessarily use them to their full potential. It’s not just about a supposed “image,” as it could make more financial sense than getting anything else. Of course that buying logic applies to other vehicles, too. To that en…