What I have yet to understand is what happens in a few hundred years when all this sequestered CO2 becomes not sequestered, and how this is not more "kick the can".
It's pretty obvious what will happen; it will transform into CO2 into the atmosphere. But at least it will have given us a few hundred years to figure out instead of piling over the present mess.
I'm all optimistic about technological innovation, but I have a doubt regarding the will of the (at least politically) great and powerful. Is this where the Free Market comes in a la Musk's future ilk?