Plants and Trees Love water vapor and CO2, and without it, they would die.
The exhaust from your car is water vapor and CO2.
If you own a newer car that is running properly — Take an exhaust hose long enough to cool the exhaust before it enters the greenhouse and before pluming the hose to the greenhouse, start the engine and let the engine warm up, and then plume the cars exhaust to the green house. Now go to your favorite oxygen bar and relax, then ride your bicycle home. Turn the car off, open the greenhouse and let it air out (so you can continue to breathe), go in to the greenhouse and find something that looks really good to eat and enjoy.
So don’t throw away your car yet, keep it for the greenhouse, just in case all the Volcanoes die.
What I find most interesting, all the ecology people are now trying to kill, all the plant and tree life on this planet, that make oxygen from CO2, they were so concerned about the rain forest being cut down, but with no CO2 in the air, it will fall down.