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Unfortunately, today's research is profit driven. The research money is going to go to the technologies that are perceived to turn the quickest and highest return. Right now, that's Lithium. I'm with you, Zinc is cheaper. But Lithium has the public's attention and imagination. The best you can do at this point is hope for a breakthrough in Zinc-air technology that makes it look more profitable. If that happens, we need some demo cars, pronto, to whoo the public and grab their imaginations.