Butterfly doors
…Toyota GT-One, Saleen S7, Ferrari Enzo (and its track day version, the FXX), Bentley Speed 8, Peugeot 908 HDi FAP, McLaren Senna, Maserati MC20, and Bugatti Tourbillon. The McLaren 12C has a unique system wherein the butterfly doors do not use a top hinge. This allows the car and its convertible version to use frameless…