These types of articles are so depressing to read; I feel so powerless.
I can take public transport, recycle, and some day buy an electric car/solar panels when I have enough money, but there's no way these behaviors can make a significant impact.
Building that electric car and those solar panels seem to have a positive impact eventually, but you're still requesting that someone manufacture something. Driving the car you've already got until the wheels fall off is probably the better choice.
tl;dr: upgrading to a newer car with better efficiency saves about 10% in lifetime carbon footprint, vs 25% that is used pre-purchase. This is ICE, but I would guess the manufacture and disposal footprint of an electric is even higher.