With the 1/X (pronounced “one-Xth”) concept vehicle Toyota's intention is to "redefine from its very roots the idea of what it means to be environmentally considerate."

The concept vehicle, that debuts a the 2007 Tokyo Motor Show, has a design that aims to "harmoniously coexist with people and society", and weighs only “1/Xth” that of other vehicles in its class.

Compared to the Prius, the 1/X has a similar interior space, but offers a doubled fuel efficiency that is double and a total weight of 420 kilograms (about one third the weight of the Prius).

The technical features include a plug-in hybrid powertrain with a displacement of only 500cc that allows charging from an external power source and a longer electric-motor cruising distance.

It also adopts FFV Technology - Flexible fuel vehicles: Vehicles capable of running on gasoline and ethanol, etc., mixed in arbitrary proportions.

The power unit is located beneath the rear seat (for a midship, rear-wheel-drive system).

The body frame makes use of light but highly rigid carbon fiber reinforced plastics (CFRP), increasing collision safety, while allowing narrower pillars for a better field of vision.

(Source: Toyota)