Hydrogen fuel-cell concept

Hyundai Motor unveiled the HED-9 Intrado, a hydrogen fuel-cell concept car, Tuesday, which will make its debut at the Geneva motor show next week. It is a crossover utility vehicle with a carbon-fiber central structure and hydrogen fuel-cell powertrain, which uses a 36 kWh lithium-ion battery to give a range of 600 kilometers while emitting only water. / Courtesy of Hyundai Motor