That's a big takeaway I got from the book Electrify by Saul Griffith (a really good read). The book only really looks at US carbon emissions, but a substantial

That's a big takeaway I got from the book Electrify by Saul Griffith (a really good read). The book only really looks at US carbon emissions, but a substantial chunk of emissions comes from refining and transporting petroleum projects -- these are emissions that occur just to prepare gasoline to be burned! Switching to electric cars (or just fewer cars) has the same double bonus as you mentioned in that there's less tailpipe emissions and less petro processing and transportation emissions as well.