Originally Posted by
Endus
1> The Earth isn't a closed system. We are constantly gaining, and losing, massive amounts of energy. That's why the Sun feels warm; solar radiation is constantly warming the Earth and adding energy into the system. We're also losing energy into space. It's a balanced system (more or less; it swings up and down, but overall hits a balance), but it isn't a closed system.
2> In your example, you removed oxygen generation from the mix, when we have a ton of oxygen being created on this planet. And the increased CO2, which is the risk you're alluding to, directly increases the growth rates of plants, which consume said CO2 to generate O2.
3> Where did the power for your electric car come from? That's stored energy, whereas the gasoline-powered car is generating its own. That's not an honest comparison. A car fueled by power from an older coal plant is almost certainly less carbon-friendly than a modern internal combustion engine with a low emissions rating, in terms of CO2 per "tank".
As much of a green-tech guy as I am, your argument is like talking about the evils of H20 by saying "if water's so good for you, why don't you sit at the bottom of a pool for an hour, huh?"