The Saturn Sky Red Line is a performance-oriented, turbocharged trim of the Saturn Sky roadster. This low-volume model shared bones with the equally obscure Pontiac Solstice and was something of a swan song before the Saturn and Pontiac brands were discontinued by GM. With slick looks and a soft convertible top, the Sky Red Line is an eye-catcher; that is, if you actually see one on the road. This Saturn is a fun used convertible, though not necessarily a bargain, and since it was available only from 2007 to 2009, there might not be much choice on the used market.