I think this is a fair question, and deserves an answer instead of being downvoted. 1. There's no gasoline in the ground, but various forms of oil. Sounds like

I think this is a fair question, and deserves an answer instead of being downvoted. 1. There's no gasoline in the ground, but various forms of oil. Sounds like a nitpick, but is actually crucial, because getting usable fuel from tar sands and fracking are dirty and expensive operations -- especially once the externalities of environmental damage is accounted for. With current trends in wind and solar, it is quite likely that at some point, extracting fuel from tar sands and fracking will simply no longer be competitive. (You may argue that things like planes are unlikely to ever go electric; but it's likely we'll at some point have scalable fuel generation from electricity.) 2. CO2 doesn't necessarily stay in the atmosphere. First of all, there are natural processes that take CO2 out of the atmosphere and store the carbon in the ground/the oceans. That's how oil and coal formed in the first place. Of course, those natural processes are slower than we'd like. That's why carbon sequestration is a seriously discussed thing, i.e. filter CO2 out of the atmosphere industrially, and/or speed up the natural processes (like growing forests). Creating an economic incentive for this is a big part of the idea of carbon emissions trading. In the end, it's viable to have a neutral economy in terms of CO2. We really need that anyway in the long term because oil is finite. If we get there faster, we'll get there without having gotten all oil out of the ground.