How will direct to car billing work for rental cars? Am I going to get randomly billed weeks after I return the car? Just let me pay for my fuel at the point o

How will direct to car billing work for rental cars? Am I going to get randomly billed weeks after I return the car? Just let me pay for my fuel at the point of purchase with whatever card I choose. I may have a corporate card that it is appropriate to pay with vs my personal card. Pay at the pump has been a solved problem for the entirety of the 21st century. There is no reason to "fix" it.