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Despite some recent problems with the natural gas supply from Russia, Germans have an ever-increasing number of CNG options. Rainer Zietlow, a German citizen who just might be the world's biggest CNG fan, started a nationwide tour of Germany's 800 compressed natural gas (CNG) service stations on the 7th of January. He'll be at the wheel of a VW Passat TSI EcoFuel with a direct injection bi-fuel turbo engine and expects to complete the tour in 80 days, just before the AMI 2009 (Auto Mobile Inter