Butterfly doors

[1] This makes for easier entry and exit, at the expense of requiring more side clearance than needed for scissor doors.

[2] These doors were commonly used in Group C and IMSA GTP prototypes, as they preserved the aerodynamic shape of the canopy while allowing the driver to enter and exit the car more quickly than conventional and gullwing doors.

The Toyota Sera, made between 1990 and 1995, was a limited-release car designed exclusively for the Japanese market and the first mass-produced vehicle with butterfly doors.

The Mercedes-Benz SLR McLaren is one of the few open-top cars to use butterfly wing doors.

Butterfly doors have been an adopted design of modern prototypes and sports cars such as the McLaren F1, Toyota GT-One, Saleen S7, Ferrari Enzo[3] (and its track day version, the FXX), Bentley Speed 8, Peugeot 908 HDi FAP, McLaren Senna, Maserati MC20, and Bugatti Tourbillon.