The world's first public commercial filling station for hydrogen-powered vehicles has opened in the Icelandic capital, Reykjavik.
Business was slow to start with - just a single prototype van
It is the first stage of a European Union-sponsored project that will see stations open in the next few months across Europe.
Iceland's industry minister called the Reykjavik opening a milestone in pollution-free transportation that would show the world that hydrogen was a real commercial possibility.
This first station is not expected to do a roaring trade just yet - there was only a single prototype van on hand in need of a refill.
But in the coming months, the first of Iceland's hydrogen-powered buses goes into service and under the EU programme similar stations will open in Britain, Germany, the Netherlands, Belgium, Spain and Sweden.
Even the petrol-hungry United States has recognised the potential for clean, hydrogen vehicles which emit nothing but water vapour.
President George W Bush, in his State of the Union address in January, announced his own $1.2bn development programme.
Nevertheless, it will be at least a decade before the industry starts to become viable.
General Motors is shortly to launch a fleet of six hydrogen minivans costing $1m each.
But, the optimists say, it is the way of the future and by 2013 one-third of all new cars sold could be hydrogen powered.