Often imitated, never duplicated. We're talking about the Maybach Exelero, the high-speed test bed commissioned from Daimler by Fulda tires. Unfortunately, only one was ever made, and it was subsequently sold for nearly $8 million, reportedly to an African diamond tycoon named André A. Jackson.
Little in the way of details is available at this point, save for the Viper's 8.3-liter V10 and 23-inch wheels.