Together with the Endo Concept, at Frankfurt Toyota will display the "i-unit", an original urban vehicle which debuted earlier this year, at the New York Auto Show.

The i-unit is an update of the Toyota PM, which was presented in 2003 at the Tokyo Auto Show. The current version is smaller than its antecedent and weighs roughly 400 pounds.

The i-unit creates a seamless transformation between the vehicle and human movement, minimizing occupied space and energy consumption with its lightweight and ultra compact size. Its components are made with decomposable and recyclable materials to reduce impact on the environment.

The concept operates in an upright and horizontal mode. Its small size enables the driver to move among people in an upright position in low speed mode. The i-unit reclines in high-speed mode and its low center of gravity ensures stable handling.

The length and width of the i-unit are respectively 1.100 x 1.800 mm in low speed mode and 1,800 x 1,250 mm in hi-speed mode.

According to Toyota, "i-unit represents a new approach to human mobility that enables the driver to interact with his or her surroundings. The design is inspired by a leaf, a natural expression of life on earth."