Great! So then, what is done with the liquid CO2. When left as a liquid, when exposed to atmospheric pressure, it will quickly turn to gas and escape back into the atmosphere. There now might be a small market for liquid CO2, but the price will quickly go to zero once just a few places start liquifying it. Even at that, it will also return to the atmosphere when the buyers simply use it for whatever reason they bought it.
Expensive as it is, liquifying CO2 is simply the starting point for keeping it out of the atmosphere. There must also be a plan for storing it...forever. Or, for the true believers, at least until the end of the present Interglacial, and New York starts getting covered with mile thick glaciers.
How much energy is used (and CO2 expended) in their effort to capture and liquify CO2?