Ford’s global head of product development, Raj Nair, stated that the Mustang endurance racer program was codenamed "Project Silver," after the Lone Ranger’s horse. So why didn’t Project Silver materialize? A few reasons, specifically its burgeoning price tag, estimated at $250,000, if not more, per car in modifications. There were also aerodynamic concerns; the Mustang simply isn’t slippery enough, and there wasn’t any way around that. Lastly, and perhaps this is the most vital reason, the respective heritage of the 24 Hours of Le Mans and the Mustang didn’t mix. The Mustang is a muscle car, and muscle cars aren’t endurance racers. Never have been, at least from Ford.