Cadillac STS-V, Pontiac G6 GXP Killed By Carpocalypse Jalopnik, MI The same dealer order form which revealed the end of days for the two Chevy's also shows there's no check box for either the performance placeholder that is the Cadillac STS-V or the buck-toothed, whale-tailed Pontiac G6 GXP. ... GM Axes Chevy HHR SS Panel Van, Cadillac STS-V |