"allantracy" wrote

The future for cars looks very bleak unless they can be persuaded to
run on electricity.

Though there was a steam car around a while ago how ironic would that
be?

Battery technology can never be made efficient, so even with nuclear or
other renewable generation of electricity, battery cars can never be made
efficient. One possibility is a means of transmitting electricity direct to
vehicles. The railways have solved this with OHLE or 3rd rail supply. It has
been done with road vehicles (trolleybuses).

The other possibility is an efficient means of storing energy in road
vehicles without reliance on carbon emissions. In principle this can be done
by using electricity from renewables to electrolyse water, using the
hydrogen as the energy store, and regenerating the electricity on board in a
fuel cell.

Peter