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The issue is energy density I believe. But they solve the "refuel as fast as a gasoline vehicle" issue.

I also don't think that electric vehicles will supplant more than 60% of the vehicle market long-term (if markets were unfettered).

The issue is energy density I believe. But they solve the "refuel as fast as a gasoline vehicle" issue. I also don't think that electric vehicles will supplant more than 60% of the vehicle market long-term (if markets were unfettered).

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Supercapacitors have come a long way in the last 30 years. It's possible that we'll see "battery banks" made of capacitors instead in the next decade.