Cadillac CTS-V Coupe, produced between 2011 and 2015 using the GM 6.2 liter supercharged LSA engine. That engine is similar to the LS9, but used a smaller supercharger (LS9 used a 2.3 liter supercharger while the LSA used a 1.9 liter version). You could also get the CTS-V Coupe with a six-speed manual transmission, the Tremec TR-6060.

https://en.m.wikipedia.org/wiki/Cadillac_CTS

Thought this was the XTS, but the rear windows are too small. Both models are OK to drive, don't know of their longevity or ease of maintenance.