The problem is that BMW is measuring tailpipe emissions. If we had hydrogen available as a fuel, that would be fine. Since we don't, it is more realistic to consider total emissions, including those involved in producing the hydrogen being consumed. Using that yardstick, and realizing that hydrogen is currently produced from fossil fuels, the vehicle is likely no cleaner than a current production vehicle. Makes good advertising copy though.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue