In 1967, Shelby American, Inc. built a pair of prototype notchback Mustangs known as “Little Red” and the “Green Hornet.” The only notchback specimens ever built by Shelby, these two vehicles would serve as test mules for the American tuning outfit. Equipped with a full independent rear suspension system and modern disc brakes, the Green Hornet packed a Shelby-modified 428 CJ-X big-block V8 paired with Conelec fuel-injection and a C6 automatic transmission. Eventually, Carroll Shelby would custom-commission a second Green Hornet prototype — a wildly elite automotive specimen that’s now slated to cross the auction block next month.
Officially listed in the Shelby Registry, the Carroll Shelby-Commissioned 1968 Shelby EXP500 CSS Prototype stands as an ultra-faithful replication of the original Green Hornet prototype, complete with the test mule’s slew of experimental systems and performance parts. Documented by a copy of the certificate of authenticity signed by Carroll Shelby is the replica prototype’s engine; a 428ci (7.0-liter) Cobra Jet V8 that was good for an impressive 400hp at 6,000rpm.
Owned by the Carroll Shelby Foundation until 2019, the car remains in immaculate condition both inside and out. Still wearing its original factory paint color, the exterior of the prototype sports a custom hood and front end, a rear deckled spoiler, and body-color-matched 10-arm alloy wheels — a full size spare of which is housed in the trunk. Brimming with custom Cobra-badged elements, the interior boasts a Hurst-style shifter and leather seats with bespoke Carroll Shelby signature embroidering in the front seats.
Sold with a Marti Report, the Carroll Shelby-Commissioned 1968 Shelby EXP500 CSS Prototype is scheduled to cross the auction block at Mecum’s upcoming Harrisburg, PA sale which will run from July 26th through the 29th. Due to the unique nature of this vehicle, Mecum hasn’t listed an estimated valuation for this ’68 specimen.