From the website...
"Created under the direction of racing legend Caroll Shelby, the Shelby EXP500 CSS "Black Hornet" pays tribute to its chrome and green prototype, the Shelby Green Hornet, and is the only approved reproduction.
The car began life as a vintage 1968 Mustang, and was transformed into an authentic Shelby muscle car worthy of inclusion in the Shelby Worldwide Registry. Registered to Mr. Shelby and donated from his personal collection, the car is being auctioned by Restoration Hardware to benefit the Carroll Shelby Children's Foundation™....
....To commemorate this groundbreaking Shelby, Barry Smith built a "new" EXP500, the "Black hornet," under license from Mr. Shelby using an original 1968 Ford Mustang. Painted "Stetson Black" in honor of the hat worn by the lanky Texan, the EXP500 CSS "Black Hornet" is identical to the Greent Hornet just after it received disc brakes but prior to the Colonic EFI or independent rear expension. Since 2003, the car has been owned by Mr. Shelby. The EXP500 CSS is a car so true to a specific moment in time, it's as if a time capsule was opened to celebrate American ingenuity at its best. It is truly the one, the only, the legendary EXP500 CSS "Black Hornet."