I suspect it'd be negligible. You still require a lot of energy for creating and disposing of the batteries, manufacturing the vehicles, and of course charging them. Most of that power (for the time being) comes from non-renewables[1]. I don't have data to back it up, but I suspect that the lifetime energy required to build a fully electric car is still greater than that of an efficient ICE car.
Furthermore, according to the EPA, 27% of greenhouse gas emissions are for transport[2], however there's no breakdown by things like airplanes vs trains vs cars.
IMO, if people really want to 'change the world', we need to shift away from automobiles, consumerism, plastics, and conspicuous consumption. Live close to work, ride a bicycle, stop buying McMansions.
[1]: https://www.eia.gov/energyexplained/?page=us_energy_home
[2]: https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emis...
Furthermore, according to the EPA, 27% of greenhouse gas emissions are for transport[2], however there's no breakdown by things like airplanes vs trains vs cars.
IMO, if people really want to 'change the world', we need to shift away from automobiles, consumerism, plastics, and conspicuous consumption. Live close to work, ride a bicycle, stop buying McMansions.
[1]: https://www.eia.gov/energyexplained/?page=us_energy_home
[2]: https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emis...