As we continue our look at the fun events of the Tokyo Auto Show, we stop again at the Toyota Booth. And we’re sure this won’t be the last time as they have, count ‘em, nine concept vehicles on display this time around.

Up next, the Toyota 1/X. Pronounced “1/Xth”, as in the car weighs 1/Xth the weight of similarly sized vehicles, this thing weighs about a third as much as the Prius. Just 926 pounds. According to AutoBlog,

The feather light weight is made possible by extensive use of carbon fiber reinforced plastic in the vehicle’s frame, which keeps weight down but is apparently strong enough to protect occupants in a crash. The 1/X also features a green powertrain that combines a flex fuel 500cc engine and plug-in hybrid drive system. The combo-powerplant is located beneath the rear seat and drives the rear wheels. Toyota quotes fuel efficiency that is double of the Prius in a package that’s roughly the same size and seats four.

More to come over the next week or so.