We will need to switch from cars with internal-combustion engines to hybrids, plug-in hybrids, battery-powered, and fuel-cell-powered vehicles.
我们要让使用内燃机的汽车变成混合动力，油电混合，电池驱动，以及燃料电池驱动的汽车。
2
In other words, the fuel-cell powered car requires only half the fuel energy that the internal-combustion powered car does to go the same distance.
换句话说，行驶相同的距离，使用燃料电池发动机汽车只需要消耗内燃机汽车的一半能量。
3
Third, fuel-cell engines will soon be economically competitive because people will spend less money to operate a fuel-cell engine than they will to operate an internal-combustion engine.