French transport company Alstom unveiled the world’s first hydrogen-powered passenger train which will be operating the incredibly quiet and environmentally friendly 'Coradia iLint' in Germany from next year, ScienceAlert reported.

http://www.sciencealert.com/the-world-s-first-hydrogen-powered-train-is-coming-to-germany

The best thing about the Coradia iLint train is that it only leaks excess steam and condensed water into the atmosphere. The train was presented to the public for the first time last week at Berlin's InnoTrans trade show.

The iLint is powered by massive lithium ion batteries, which get their energy from a hydrogen fuel tank installed on the roof. On a full tank, the hydrail can travel up to 800 km.

According to German newspaper Die Welt, Lower Saxony's local transportation authority has so far ordered 14 iLint trains from Alstom, and if they prove to be a success, more will likely be seen in other regional areas of the country.