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DigInfo - http://movie.diginfo.tvOne of the concept cars exhibited by Toyota at the 2007 Tokyo Motor Show is the environmentally-friendly 1/X concept car.Based on a concept of reducing vehicle weight to "1/Xth" that of other vehicles in its class, the 1/X was reduced in weight to 420kg, which is about one-third that of the Prius. Fuel efficiency that is almost double that of the Prius was also targeted while maintaining an interior space comparable to the Prius. As an FFV (Flex Fuel Vehicle) that can use bioethanol in addition to gasoline, the 1/X is based on a 500cc engine and also features a plug-in hybrid system that allows charging from an external power source.The power unit is located beneath the rear seat for a midship, rear-wheel-drive system.The body frame features lightweight, high-rigidity carbon fiber reinforced plastic (CFRP) to ensure superior collision safety performance while allowing narrower pillars for a wider field of vision.The 1/X is a four passenger vehicle with an overall length of 3.9m, an overall width of 1.62m, an overall length of 1.41m, and a wheelbase of 2.6m.