This is especially attractive for aircraft, but it will take awhile to happen. We probably need new aircraft.

Hopefully civilization will not collapse first, from refugees driving fascist governments into power, and former democracies self-surveilling themselves into locked-in dictatorships.

On the upside, collapsed civilization will have lower energy demands, and will find carbon extraction and transport harder to organize.

Sure. Find some way to break up CO2 from the atmosphere and bond hydrogen to the carbons. It creates a relatively safe, easy-to-use hydrogen storage medium and it reduces greenhouse gases at the same time. The cars would just need to break the carbon-hydrogen bonds to release the energy once again, and the process is GHG-neutral.