Fuel Cells and Natural Gas
The practicality of fuel cells is years away. The supply of fuel cells is small and the technology is so expensive that it would costs enormous amounts of money to build a fuel cell vehicle that was in any way practical. One of the other downfalls is you still need fuel and the infrastructure of fueling stations is non-existent.
Fuel cell vehicles will take some time to enter mainstream or they may never enter mainstream at all. We may be involved with the development of the fuel cell but for now we stick with what is practical, cost effective, works well and is past the proof of concept stage. Most people like the fact that electric vehicle technology eliminates their dependence on any kind of fuel. The use of natural gas will mostly benefit heavy equipment and trucks.