That’s why we’ve parked the car for all trips that are even theoretically possible with transit and keep the house at 17-18 C (about 64 Freedom Degrees), aside from the toddler’s room.

I don't think op is taking about CO2 emissions, rather that Russia exports a lot of fuel. But even if op is taking about CO2, diving a car and breathing aren't that comparable. Exhaling CO2 is part of the active CO2 cycle and doesn't really contribute to climate change. Digging up locked carbon from the ground and burning it does.

No, I was not talking about CO2 now. I was talking about the global energy market. Most of Europe decided that buying energy from Russia needs to be phased out to give them less money to finance their attack war. I think that's a good plan. Unfortunately with acceptable supplies shrinking prices went up. So now Russia has more income to finance the war. I know it's not a very popular opinion, but for me drastically shrinking demand is the measure that helps.

That this would help the CO2 issue is only a nice side effect.