Last time I checked France was the best place since they accidentally have a very climate friendly power grid. Then you're left with just the embedded emissions from battery construction and the rest of the car.
Edit: this is wrong
Another fun fact is that short haul flights have fewer emissions per mile than electric vehicles for many current energy mixes.
Edit: wrongness ends (I hope)
It's hard to beat mass transportation no matter what you stick in the engine - it's just physics that power requirements scale mostly with cross sectional area, so it's more efficient to increase length and volume.
Edit: I'd remembered a per km figure and a per mile figure and forgot that the units were different. In reality, fossil fuel cars are about 35% better than short haul flights, so electric cars emit about 1/3 as much as short haul flights.
("Necessary" being aimed at people doing the school run, where the parents wouldn't need to be there if the children got collective transport instead).