Toyota’s 1/X concept, (pronounced one/Xth) is a hybrid concept that doubles the fuel efficiency figures of the Prius hybrid in a mid-engined, rear-wheel-drive four-door body. While the interior space remains similar to that of a Prius, the concept ways a mere 420kg, or around one third the weight of the Prius. The weight savings come from building the car out of carbon-fibre reinforced plastic, which also ensures rigidity and strength is maintained.
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