US Department of Energy (DOE) laying out industrial targets for fuel cell cost, durability and performance.
Stack life time : 5,000hrs, Freeze start in 30sec to get 90% power at -20 degC, Power density : 2kw net/liter and Cost : 30US$/kw by 2010.
Besides fuel cell stack, fuel storage is another issue for vehicle installation and hydrogen distribution infrastructure, which forklift industry has an advantage as stated by Kodiak.
Forklift industry of which scale is roughly one hundredth to automobile industry is sitting on "Big brother", whether we like it or not. I believe no forklift manufacturer alone can hit the DOE targets set for fuel cell stack.
Two days ago, Toyota Forklift announced their prototype, rather a concept lift truck, powered by hybrid of fuel cell and capacitor at this CeMAT. Toyota fuel cell automobiles are now released to fleet users still in a small scale, but surely commercialized. Forklift industry, I think, follows in two years time.