GM debuts the Corvette ZR1—but will the energy bill kill its kind?
                                
                                
                                    (Newser) -
                                    GM will unveil the latest version of the Corvette at the Detroit auto show next month in all its supercharged, performance-car glory. But the 2009 Corvette ZR1 may actually be the last of an endangered breed—the Detroit muscle car. The new energy bill, with its stricter fuel economy standards,...