The history of Toyota Motor Corp.'s most popular car, the Corolla, is the focus of an exhibition in Tokyo's Odaiba district to mark the 40th anniversary of one of Japan's best-selling autos.

Visitors can track the changes in one of the best-selling cars in history at Toyota's Mega Web showroom until Oct. 1.

Toyota has sold 31.64 million units worldwide over the past 40 years, including nonsedan models. About 20 million of those were sold overseas.

Since the first Corolla sedan rolled out in 1966, it has become Toyota's best-known model and a household name in Japan. The Corolla has been the top-selling vehicle of the year here for 36 of the past 40 years.