A note from a article found on the web.

The concept car itself was built very quickly by Metalcrafters, which builds Chrysler’s concepts; the body is made of carbon fiber, not steel or fiberglass. The car is wider and shorter (in both length and wheelbase) than the Dodge Charger. The wheels are far larger than those of the original cars, though styled to look similar: 20 inches up front and 21 inches in back. The color is original for the concept, though the Hemi has authentic orange paint. The Dodge-provided 13.0 second quarter mile time and 4.5 second 0-60 would not apply to actual production cars, since it comes via dual Flowmaster mufflers with no catalytic converters.

This is disappointing!!! No sweat. I had planned to SC mine anyway.