I think there's a big difference between 'can't' and 'not ready to'. I would also take MIT as a source over WaPo or Reuters. Certainly we'll need to upgrade the grid over time - to me the biggest point is that we'll need to do that to a lesser degree anyway, so the question isn't if, it's a matter of scale. And it's also not something unique to EVs as mentioned - any other energy source also requires it, just in different ways/sectors.
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