Seen the H.P. numbers they're getting out of the 'Vette engines now? No wonder they won Daytona 1st overall and class at LeMans. Dave Heinz would be proud (3rd overall at Daytona in '73; I know, I was there).
500 hp is just around the corner, if gas stays cheap. Engine will probably turn 900rpm in 8th gear at 60 to meet mpg requirements.
Nothing is really going to happen utol gas hits $3. At that point the fuel will begin to be a significant part of the cost of ownership. Most people don't even realize that their cars cost them between 60 cents and a dollar a mile to buy and operate.