Days after revealing one electric car bound for its Tokyo auto show stand, Toyota today details another.   But the Fine-Comfort Ride concept, just shy of the length of a Toyota Camry sedan, is envisioned as a 621-mile-range (1,000-km) fuel-cell vehicle, using electricity generated by hydrogen and oxygen in a fuel-cell stack, and stored in a battery, as its fuel source. Toyota estimates the car’s hydrogen refueling time at roughly three minutes.   [출처] ward`s auto, 2017.10.18.  http://wardsauto.com/engines/toyota-debuts-fuel-cell-lounge-concept-tokyo