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Burning Gas Pollutes So Much, Dirty EV Battery Manufacturing Evens Out In About 2 Years
(www.jalopnik.com)
This is a most excellent place for technology news and articles.
2% is probably near the theoretical maximum, too. Actual output considering weather, efficiency losses, etc is probably less than half that. Solidly in "not-worth-it" territory for most use-cases. Heck, my car won't even properly charge on a 120V outlet when it's too cold, because it needs to heat up the battery to a safe temperature first and at -20°C that takes more than the ~1kW available from the outlet.