That is a nice looking trailer. I looks similar to one a friend of mine is thinking about buying. His is made by Infinity. I believe they are based in Texas. They have up to 6 vehicles on one trailer. I don't recall their website, but I think it is
www.infinitytrailers.com. He has been using wedge trailers and has been doing well with them, but the Infinity sits lower reducing drag. This Boydstun also has a lower center of gravity and sits closer to the ground. The down side to the Dodge duallys is that they take a beating on depreciation with the high miles you accumulate pulling cars around. He put air ride on one pickup. I would question whether anyone would get 14 mpg pulling cars around no matter what they were using for power. I think a single axle tractor would hold up better, but you would probably need to tag it for more weight than a pickup. There is a lot of competition with these hot shot type of car haulers.