Blue i believe. But it appears that you are driving faster if you are in a red car.
The most popular company for cars this year (2012) is Ford however Vauxhall is also a very popular company to sell cars.
Yellow
The most popular car was the Model T
The michel Wise was the most popular car in the 1940s
Usually a sort of maroon color.
The best selling car is the Toyota Corolla therefore it is the most popular.
The most popular car from 1964-1969 was the Pontiac GTO.
nissan TOYOTA COROLLA
according to recent study cheveloret camaro is the most popular sports car
minicooper car
The Smart Car
Ford was the most popular in the U.S.