Hi dougster,
My view is different.　Fossil fuel powered forklifts may be superseded by hydrogen powered in small/medium capacity. As long as reciprocal IC engine is used, vibration and noise levels are inferior to those generated by electric forklifts. Ultimate power source is the fuel cell. How and when we reach to this goal is quite dependent to developments mostly in the automobile industries where volume can press down the cost increase force. Hydrogen or any hybrid system is a mere transition alternative to the existing prime movers. How would you say?