The Bugatti Veyron 16.4 is currently the most expensive street-legal full production car in the world, with in excess of 1001 horsepower, in either the metric or SAE scale, with its top speed of 253.81 mph (408.47 km/h). The Bugatti Veyron reached full production in September 2005. The car is built by Volkswagen AG subsidiary Bugatti Automobiles SAS in its Molsheim (Alsace, France) factory and is sold under the French Bugatti marque. It is named after French racing driver Pierre Veyron, who won the 24 hours of Le Mans in 1939 while racing for the original Bugatti firm. After the release of the car, it has been reported that while each Veyron is being sold for $1.2 million, the production costs of the car are approximately £5 million per vehicle. This is not the price to produce one vehicle, but rather the cost of the entire Veyron project divided by the number of vehicles produced at that time. As Bugatti, and therefore Volkswagen, are making such a loss, it has been likened by automotive journalist Jeremy Clarkson and his Top Gear programme team in their story on it to the Concorde, in that both were huge achievements, but the car will probably, like the plane before it, be discontinued after proving to be an economic failure.
but there is still something to be said for being american made:
The Saleen S7 is a limited edition, hand built coupe developed jointly by Saleen, Hidden Creek Industries, Phil Frank Design and RML, and produced solely by Saleen in Irvine, California. It is the first car produced by Saleen not based on an existing design and is considered to be the first true American production certified supercar. The S7 debuted on August 19, 2000 at the Monterey Historic Races. At this time the car was normally aspirated with 550 horsepower. In 2005, the S7 was replaced by the S7 Twin Turbo, which featured a more powerful twin-turbo system that boosted engine power to 750 horsepower (760 PS/559 kW) and the top speed to an estimated 250 mph (402 km/h).