I remember reading a website by a group of American researchers who had designed a plant, in some detail, where a nuclear reactor drove an atmospheric-CO2-to-gasoline reaction. The gasoline it produced was expensive, but not so expensive as to be completely absurd - a rise in oil prices and a fall in nuclear energy costs could make it practical. Needless to say, i can't find it now.

However, i did find this similar French work, which suggests taking advantage of the output from nuclear power plants at off-peak times:

https://www.sciencedirect.com/science/article/pii/S187661021...