"to run an electric car you need plenty of cheap, reliable electricity, something you don't get with solar and wind "
If you think you don't get it now, imagine what happens if everyone moves to EVs.
Solar/wind/etc can just about match existing carbon-emitting electricity production if you carpet the countryside with the things but replacing cars with EVs would quadruple that demand.
The _real_ cheap reliable electricity has to come from nuclear power. Fusion is unlikely to happen in our grandchildrens' lifetimes, so we'll have to settle for molten salt nuclear fission.