CO2 is not a concern. Carbon footprint is a stupid metric.
CO2 is not a greenhouse gas. This was proven by Al Gore in the movie he starred in.
Now, the thing about electric vehicles.
It is only because lithium is mined in third world shitholes that you can even own an electric vehicle.
The pollution of such mining is bad. (and pollution is what we should be measuring, not CO2)
After we get past that, the comparison between EV and ICE is more about driving habbits. If it is to the store and around town, with lots of starts and stops and low speeds, the EV is much more efficient.
If it is long distance driving at about 65 mph (100 kmh) then the ICE is much more efficient. (especially considering the added battery weight)
Now, driving an electric vehicle is much more pleasant.
It is why all locomotives are now diesel-electric.
i really do not know why we haven't gone back to experimenting with turbines. They tried to put them in cars, but there was always problems with gearing.
But, if you get a turbine to run a genset with a few batteries, and then an electric motor driving the wheels, the whole system is lighter and more efficient.
Yes, the mining of the required materials is a big issue. Basically we need there to be less cars, but a lot of the world is still trying to catch up with what the rich countries have. Fossil fuel cars have got more efficient, but they have also tended to get bigger. For the average commuter two seats and minimal luggage space would do. I used to commute by motorbike, but that can be dangerous and the bikes are not as efficient as they could be. I fancied the idea of an updated 'micro-car' with decent crash protection. It could be half the weight of a modern small car.
Where we live public transport is limited and we need at least one car. I can get to work by train for now.