Let's take this article at its word, which is that right now we can bury carbon for $600/tonne (forget the speculative $100/tonne) which equates to $1.32/liter

Let's take this article at its word, which is that right now we can bury carbon for $600/tonne (forget the speculative $100/tonne) which equates to $1.32/liter of gas (based on the speculative $0.22/liter). In California right now gas costs ~$4/gallon (which is high compared to most of the US but low compared to most of the developed world), so it's not an insane amount to pay for carbon-neutral gas. The interesting thing to me is that this is presumably something ideal to do with excess solar power (e.g. it's a much better deal than paying other states to use it, which is what California is currently doing). Another question is how does this compare, price-wise, to using solar power to create fuel (e.g. hydrogen) and truck it around the way we do with gas.