While Tesla and local giant BYD's premium models are used in the rich cities of the country, Wuling Hongguang Mini has become the face of greener transportation in an increasing number of underdeveloped regions. The small two-door vehicle, priced at $8, has sold more than 300 million units. "This car is small and convenient, easy and cheap to park and charge, so I chose it," owner Li Cao told AFP.