I am going to do a mileage test(in the next couple of days) to see exactly how much it is costing me to have it mounted up there and then to see what the difference will be with the custom rack mounting it down over the rear window just out of the airstream! I will be taking pics and showing the results. Here is another cool pic of my custom Motorcycle hitch/carrier I made to transport my Bobber! I used to have it mounted on my little trailer like the above one, then got tired of taking it off all the time to haul other stuff so i came up with this one mounted right to a receiver hitch, Pretty cool! :{)