The Yamaha OX99-11 was a sports car project designed by Yamaha's subsidiary Ypsilon Technology and International Automotive Design that was supposed to enter production in 1994.
A coupe or coupé is a passenger car with a sloping or truncated rear roofline and typically with two doors.
Audi TT coupé
1955 Cadillac Coupe de Ville
Example of a coupe carriage
Volvo C70, an example of a convertible coupe