Although you couldn’t see it when I took the photo, this 1986 Pontiac 2+2 has a fastback, or maybe more correctly, a bubble-top roofline (see the Hemmings photo below). It also has a more aerodynamic front end than “regular” Grands Prix (Grand Prixes?). The reason? GM’s cars weren’t doing all that well against Ford’s much sleeker Thunderbird in NASCAR races, so