We could also cover all the roads with PV, invest highly in saltwater batteries, the global grid , small, modular nuclear reactors, solar desalination, developement help for poor countries by building up a local solar industry etc. etc.

But the world is rather focused on war. Now in the ukraine, but taiwan is building up. I mean, a nuclear holocaust would also reduce CO2 emissions, but seriously, it is so frustrating that there are technological solutions to real problems, but they are just not seriously implemented. We could, but we don't. At least not on a global scale.