if, as I expect will happen, batteries get yearly cheaper, more powerful, and lighter, two-year old cars could become really good buys with a later battery fitted, and the materials from the old one recycled. It's also being said that old batteries can be sold to homes with solar panels, where their weight and size won't matter.
Refurb factories fitting, say, new seats and interior trim, renovating the paintwork, and swapping batteries, could be much smaller, cheaper and less hi-tech than other car factories
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