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I didn't know it could be made from so many sources. That really makes sense to work towards something that is going to just get better. That's one reason why Tesla chose their laptop batteries, because there would be multiple approaches in industry trying to improve on them. It's nice to have industrial and agricultural pressure coming up with new and better ways to make profitable fuel. Then the alternative fuel world can just sit back and reap the rewards. I think that's what went wrong with the Ovonics approach. They made a great battery can could make a car go 220 miles or so in town, but industry wasn't going to have the explicit goal of having better electric cars, only better electronic devices!
I think I'm now an ethanol convert! I especially like how no major modifications of an engine have to happen to use it. There's a station in Tacoma, which is like 30 miles away. Hopefully they'll make more.
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