The real economic benefit, however, is in the cost savings thereafter. To be sure, a lot will depend on the availability of convenient charging stations, but they are starting to appear.
真正的经济效益会在使用起来以后才会出现。当然这要取决于充电站是否方便找到。不过，现在已经这样的充电站开始慢慢地多起来了。