Transport is the 2nd sector in terms of CO2 emissions. If we solve that alone, I am happy.
Actually it's only 16% https://www.visualcapitalist.com/a-global-breakdown-of-green...
That visual shows that road transport is 11% , making it the second highest category, as the poster said. This is a great graphic though, thanks for sharing!
Edit: actually in the graphic it's the largest sector! My bad
I found it here: https://ourworldindata.org/emissions-by-sector
Not sure how reliable all this is... Yet it seems "road" is nearly 10-11% which is big enough to solve and to have already an impact in everyday life. Then it cascades to other sectors too.