Hydrogen has emissions, energy security and efficiency advantages over combustions engines -- but would require new vehicles and a completely new fueling system, is highly flammable, and is currently produced either from natural gas or by using lots of electricity to split water. It's promising in the long run, but we’ll likely see other transportation alternatives first.
Dr. Dan Sperling Director, Institute of Transportation Studies, UC Davis
On the benefits of hydrogen powered carsFull Interview
Jesse Ausubel Program for the Human Environment, Rockefeller University
With the long view on hydrogenFull Interview
Dr. Lynn Orr and Dr. Sally Benson Stanford University Energy Program Directors
On the basics of fuel cells for cars and the potential of hydrogenFull Interview