The Camaro has been outselling the Mustang nearly every month since it's introduction. You and the haters can bash it all you want, but that just means that you are in the minority (as usual).
As to the Volt (you brought it up), it was the best selling electric plug in vehicle in the United States again last month. Unlike Ford's Focus Electric that has sold a total of 16 cars since it's introduction in December.
Chevy sold 326 Volts in December of 2010. If the current pace (32 cars per year) continues - it would take Ford 10 years to equal the Volts first month of production...
May and YTD 2012 sales of Electric Plugin vehicles:
Chevrolet Volt 1,680 up 14.9% YTD 7,057 up 223.1%
Prius PHV 1,086 down -34.3% YTD 3,638 n/a
Nissan LEAF 510 up 37.8% YTD 2,613 up 20.6%
BMW Active E 11 down -63.3% YTD 594 n/a
Mitsubishi i 85 up 7.6% YTD 300 n/a
Ford Focus Electric 6 n/a YTD 8 n/a