While the case for hydrogen as fuel is a topic full of debate, it would be hard to argue that Honda's most recent fuel cell sedan isn't world's better than its first. Styling wise, for sure, the new Clarity is a huge step forward, as is the electricity-generating fuel cell stack. If you want one, don't get your hopes up. The vehicles are only being leased in Southern Cal and Japan, and there won't be many of them available. The official press release is after the break.
The FCX Clarity is a next-generation, hydrogen-powered fuel cell vehicle. Significant advances over Honda's previous generation FCX include a 25 percent increase in combined fuel economy to 72 miles/kg-H2* (74 mpg GGE
Source;
http://www.autobloggreen.com/2008/08/06/jamie-lee-curtis-receives-her-honda-fcx-clarity/