Yeah. I think the main thing is somebody with clout and the capital has made it their mission to push it out.
There are better batteries and technologies out there, but nobody is really evangelizing for Ballard or Global Thermoelectric or other fuel cell makers as much as Musk is for his system.
Lithium batteries are also pretty hazardous. I don't think I would want to live next to a large bank of them in the event they should ever overheat and explode.
While there are lots of tech available, the trusty old lead acid is one of the most robust and cheapest.
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