The Mazda Cosmo, which began to be marketed in 1990, was the first car to be equipped with what as an option?

Question

What car manufacturer was the first to design a car using a wind tunnel, the first to sell a car with a monocoque chassis, the first to offer a 5 speed gearbox as an option and the first to sell a car fitted with a V6 engine?

Answer 1

Result -
GPS