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The Toyota Mirai fuel-cell electric vehicle is so far a niche vehicle, but that hasn’t stopped Toyota from dreaming big — really big. Project Portal is a proof of concept semi truck that runs on a scaled-up version of the Mirai’s powertrain. The Mirai is an four-door car, though, with a maximum weight of two tons. The proof of concept vehicle needs to haul 80,000 pounds,… Read More