Photos: Hot, quirky and green at Tokyo auto show

The Taiki is Mazda's fourth concept car with the theme Nagare, which means "flow." The back wheels tucked under wings give the car better aerodynamics. The car body went through wind-tunnel testing that determined this design created a "tunnel" of air between the front body and rear fender, resulting in more downforce and zero lift on the car, according to Mazda.

Photo by Mazda