Recliner wrote

The infrastructure is needed for all those homes where the car
isn't
parked in the drive, and for neighbourhoods where the electrical
supply hasn't been sized to allow everyone to draw an extra 100amps
continuously (ie almost all of them).

Yes, that's a very good point. Imagine if every house in the street
was
charging its electric car(s) overnight -- it's pretty unlikely that
the
local sub-station and wiring could handle the load. It may be OK if
just
one or two houses use 13amp sockets, but not if the whole street is
doing it for hours on end.

Many neighbourhoods were sized on the basis of many night storage
heaters, remember them ?

So probably only little local difficulties until electrical cars reach
10 % or so.

--
Mike D