Governors Urge Biden To Order 100% Zero-Emission Car Sales By 2035

Electric/hydrogen vehicles aren't really zero emission. Their emissions are at easier to control, generally more efficient facilities that are going to get "greener" in the future.

Generally speaking, electric cars are powered by variable power because they aren't base load- meaning they run on whatever the most expensive source currently online is. Most or all household loads are the same way with possible exceptions for refridgeration and HVAC.