Quote:
Originally Posted by Dave R
They already exist, but are extremely limited in range due to the huge difference in power density between petroleum and batteries. I think the best batteries have something like 5% of the power density of petroleum. Some day, that will probably change dramatically. I think graphene will make batteries, motors, solar cells, and conductors in general, vastly more efficient and compact in the next few years.
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I don't even think it's that good, 5%. Once it gets better, I would say even to 30%, the IC engine for road travel will disappear quickly.