A 2006 Saleen S7, one of the fastest street-legal US cars ever made, starred at RM Sotheby's Motor City sale on the weekend.
With a top speed of 248 mph and 0-60 mph in 2.8 seconds, this is a car built to impress, partly explaining its $632,500 showing.
Condition was another factor. It had just 300 miles on the clock and its carbon fibre bodywork was in "factory fresh" condition.
The sale just missed the record for a Saleen, held by a 2005 S7 Twin Turbo that made $682,000 in 2015.
The present vehicle has the accolade of being one of the last Saleen S7s off the production line. The company halted production the same year this 2006 model was produced.
Saleen S7s made regular racing appearances during the noughties, including at the Le Mans 24 Hours and the 1000 km of Spa.
"With racing pedigree, sought-after low-mileage, and a Ford-built engine producing numbers that remain impressive 10 years down the road - this is an all-American supercar, through and through," said Barney Ruprecht, car specialist at RM Sotheby's.
A Duesenberg Model J 'Disappearing Top' Convertible Coupe was the most valuable lot of the auction. The 1929 vehicle, with coachwork by Murphy, sold for $1.5m.
Several other pre-war cars also fared well. The auction featured a 1933 Packard Twelve Coupe Roadster, which sold for $365,000, while a 1938 Packard Twelve Coupe Roadster achieved $330,000.
A 1934 Pierce-Arrow Eight Silver Arrow made $242,000.
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