I agree with you heeltoe6, If I had my way everyone would stop using cars to get from place A to place B, and start using trains.
But, try telling that to 300 million Americans. That is why, if we want to reduce CO2 levels, and the greenhouse effect we must get these hydrocarbon burning beasts off the road.
PS I have no idea how you can possibly debate global warming, it obvious even without a thermometer or any scientific equipment, but if you want to, feel free to. I always love good science topics.