One for the Hydrogen heads

I remember talking about this in 1991, sadly now it's here it takes a lot of energy to produce, more to store and a lot more to transport.
http://www.bbc.co.uk/news/business-33005362
£38,000+ and 20cm longer than a standard car parking space, we have a problem here... one Smart, one Mirai, one Smart, a tree, ah well, time will tell.