While the only 100% hydroelectric regions I know of are the pacific northwest USA and eastern Canada, I live in an area with 60% hydroelectric and nuclear. 30%

While the only 100% hydroelectric regions I know of are the pacific northwest USA and eastern Canada, I live in an area with 60% hydroelectric and nuclear. 30% is natural gas. The last 10% is a split between coal and renewables. So a battery electric vehicle is 65% near zero emissions, and 95% is less polluting than oil. (Without considering the inherent efficiency of battery powered motors vs. internal combustion engines. Or the environmental footprint of manufacturing "green" machines, building concrete containment domes for nuclear plants, nuclear waste disposal, or methane leaks). Even pure displacement of air pollution to smokestacks is a huge plus in places like midtown Manhattan where the most respiratory health harms due to particulates, NOx, ozone, etc. are taking place. Less kids getting asthma, people getting heart attacks/strokes, premature births, etc.