That's not to say it will be competing with the Volt, but Corvette Vehicle Line Executive Tom Wallace gave some hints as to where the C7 will be going during the Detroit Auto Show. According to Wallace, a C7 that's 300-400 lbs lighter and has 150hp less from a 4.7L V-8 would have a similar power-to-weight ratio to the current 6.2L 405hp C6 model. GM has already demonstrated direct injection on the small block V-8 and the combination of a smaller displacement DI engine with a dual-clutch-transmission would likely easily meet the fuel economy rules for at least the middle years of the next decade. Beyond that, it's anyone's guess where things go. As hybrid systems get smaller and less expensive, some form of hybridization seems likely at a minimum. Even smaller engines with less than eight cylinders are also likely after the C7.