I'll definitely go for one in future, maybe the iX3 (if it's affordable) but driving either PHEVS or full electric cars (and not wanting to upset our American Friends) won't make much difference unless Mr Trump and other major nations don't commit to carbon emission restrictions for their respective nations.
I suppose every little helps but if major nations don't do their bit for the environment, then it's all in vain I'm afraid.
Greta thunberg will be furious