Without more help from Washington, electric-vehicle sales will struggle to live up to the stock-market hype.

That Wall Street Journal lede pretty much tells the tale.

And this:

If the new technology is to live up to high investor expectations, the global record suggests that the US will need to embrace subsidies.

It depends on Uncle Sam. As long as electric vehicles get subsidies of any sort—either on the manufacturing end or to buyers of them on the other end—these battery cars can never be mainstream. As long as they’re getting any sort of subsidy, battery cars are tautologically unready for market.