I know that chem E’s work on fuel cell development. I wondered what else is availble in alt energy research, and what classes should a chem E take to be prepared for the alternative energy field?

I need to know what kind of engineer would help to make the hydrogen fuel cell more economical

If we went to an alternative fuel of specifically a fuel cell that uses water, how would the govenment tax it to pay for roads and what not? Where I live, the cost of off road diesel $1.00 less per gallon because it isn’t taxed. How would the government make that money up if we could just go to any water source and fill up? How will the make up the hundreds of millions of dollars they’d lose? I don’t think a dollar per gallon tax on water would work because its also a neccessity to live. Do you think not being able to get around the tax issues has limited the governments involvement in finding alternative fuels? I know theres been government fuel cell projects going on since the 80s, but its hard to believe nothing practical has come out of it yet.