Is there zero pollution on making all this electricity we will need to run cars?
Oh dear you don't seem to have been keeping up.
Put simply, no of course not, all electricity generation emits CO2 in varying degrees, from a lot for coal generation to very little for renewables. Whatever the generation mix, the net level after distribution losses is still less than the CO2 exhaust emissions from a petrol or diesel car. UK gen mix is expected to be half renewables by 2025, and mostly renewables plus a rump of natural gas by 2040. Yes the UK is well placed because of wind resources but it's the UK we're talking about with the announced 2030 ICE phase out.
Embodied energy in car manufacturing (both for ICE and EV) depends largely on the gen mix in the country of manufacture. China (a lot of cars, and EV batts, likely to be built there in next decades) will be slow to switch from coal power although mitigation technologies including plant-level carbon capture will probably have some positive impact on their emissions. (Actually I suspect the CO2 in batteries dimension will impel car manufacturers to locate battery manufacture in countries with a reasonable gen mix, as it's going to be in the spotlight from at least some consumers especially the younger ones.)
Analyses vary depending on all these assumptions, but most studies model that in most markets EVs already have life-cycle emissions lower than ICE equivalents, and the gap is bound to widen as electricity generation continues to decarbonise.
No it's not the whole solution to climate change, but one of a number of linked efforts that collectively reduce emissions and their harmful effects over the next two or three decades. We may not be bothered but our kids certainly are.
There are lots of other dimensions to the EV debate apart from carbon, including issues around battery materials, eg artisanal mining of cobalt in DR Congo just to name one. That's as with any major technology shift, eg the development of LEDs is said to be causing significant health impacts due to light pollution and its effects on sleep quality and thereby on diabetes, high blood pressure, and depression. There's no such thing as a free lunch.
On the plus side, EVs will substantially improve local air quality in urban areas (not totally, as particulates still generated by brake linings etc, while the 'last generation;' of ICE cars will have the best NOx and particulate controls and be banned from many city centres anyway) but as localised air pollution currently contributes to 40,000 early deaths a year in the UK alone, that of itself is quite a big deal if we could reduce it by even a proportion (we're willing to spend hundreds of billions to save broadly similar numbers of lives from Covid).
But DYOR.