The Train of the future might be Battery-Powered:
www.citylab.com/commute/2015/01/the-train-of-the-future-might-be-battery-powered/384522/
The Train of the future might be Battery-Powered:
www.citylab.com/commute/2015/01/the-train-of-the-future-might-be-battery-powered/384522/