This image provided by General Motors Corporation shows the 2009 Corvette ZR1, the fastest, most powerful automobile ever produced by General Motors Thursday, December 20, 2007 in Detroit, Michigan. The Corvette ZR1 features an all-new LS9 supercharged 6.2L V-8 engine targeted to produce 620 horsepower and approximately 595 lb.-ft. of torque. The ZR1 is expected to be the first production Corvette to achieve a top speed of at least 200 mph. The Corvette's chief engineer, Tadge Juechter , says the 2009 Corvette ZR1 may be the last in a long tradition of Detroit performance cars, endangered by stronger federal fuel economy regulations and limits on carbon dioxide emissions.
(AP Photo/HO -General Motors)