GM Axes Every High-Performance Trim Level Except Important Ones

GM's already axed the Chevy Impala SS, Cobalt SS Sedan, Pontiac G6 GXP, Cadillac STS-V. Confirmed dead now include HHR SS and Cobalt SS coupe. But the Camaro SS, CTS-V and ZR1 still live. [KickingTires]