The Natural Philosopher gurgled happily, sounding much like they
were saying:

Thirdly, electric cars have regenerative braking and don't suffer from
idling losses in city traffic, making them more efficient still.

Stop-Start in city traffic is hardly unusual in ICE cars.

Exactly. But its still inefficient, and still rare.

Rapidly becoming less rare. And how is it "inefficient"?

The overall result is that it is now possible to build electric cars
with a range of 500 km

chortle

Its true. It is POSSIBLE. Its just very expensive and very prototype.

That's a highly optimistic maximum possible 300 miles? Or a real world
300 miles?

Indeed. And the chemistry of those batteries, in manufacture and
disposal, is sooooo environmentally friendly.

Its a lot more environmentally friendly than a traditional car,with lead
starter batteries, high energy iron and aluminum castings, etc etc.

Easily recyclable, though.