If you wanted to pay for direct air capture of CO2 to directly "undo" your climate effect of driving, the cost would currently be about $6 per gallon. Price comes from [1], found [2] looking for a second opinion on current direct air capture cost.

[1] https://theclimatecapitalist.com/articles/gas-should-cost-13... [2] https://www.forbes.com/sites/phildeluna/2024/11/29/will-dire...

I wonder whether those methods scale at those prices to the theoretical demand of undoing burning gasoline. I doubt it.