What does it cost to be the King of the Road? Apparently $605,000 (after auction fees). That's how much a Ron Pratte, who seems to be buying just about every Shelby at Barrett-Jackson, paid for the right to own the very first 2008 Shelby GT500 KR Glass Roof. That will only last for a while, though, since at least 999 more KR's will be built and are currently being assembled at the Shelby plant in Las Vegas. Numero uno features a black-on-black paint scheme that looks stunning in person, as well as a glass roof option that won't be available for the rest of production. As usual, Carroll Shelby was on hand to send the car off, reminding buyers why they are paying this much money for a Mustang. Still, the all the proceeds from the sale went to the Juvenile Diabetes Research Foundation, so it's all for a good cause.