The Energy Evolution: An analysis of alternative vehicles and fuels to 2100 The Energy Evolution compares more than 15 of the most promising fuel and vehicle alternatives over a 100-year period, in scenarios where a mix of vehicles is used initially with one fuel and vehicle alternative becomes dominant in the vehicle mix over time. The scenarios evaluate the performance and viability of each alternative in terms of greenhouse gases, oil imports, urban air pollution and societal costs.       Energy Evolution Report (4,936Kb PDF) Energy Evolution 4-page Brief (2,400Kb PDF)

1. A scenario which initially includes a mix of alternative vehicles, and is later dominated by hydrogen fuel cell electric vehicles sales is the only way to simultaneously:
   • cut greenhouse gas pollution by 80% below 1990 levels;
   • reach U.S. petroleum quasi-independence by mid-century;
   • eliminate nearly all controllable air pollution by the end of the century; and
   • reduce societal costs by $600 billion per year by 2100. (This scenario includes an important role for a mix of vehicle and fuel alternatives in the near-term.)
   
    
2. The cost of building a national hydrogen fueling infrastructure is more affordable than most people think: $9 billion to add 6,500 hydrogen dispensers to gasoline stations over 10 years. With an aggressive implementation, at the end of this period, hydrogen fuel providers will be making a 10% after-tax return, and overall revenues from hydrogen sales will outpace costs.
    
3. Accelerated investment is needed now to ensure that hydrogen vehicles with superior benefits can take over as a part of the evolution from nearer-term, but less capable alternative vehicles.

The Article continues:  http://www.hydrogenassociation.org/general/evolution.asp