How many bottles does it take to drive to Arkansas?

How many bottles does it take to get to ___ ? That is the driving game that we like to play on our road trips. See, once the boys break the seal to their bladders, they have to go to the bathroom every few minutes. SO, they use water bottles in the car so that we do not have to stop every 10 miles for potty breaks. Blake is OCD neurotic about the wipes. He MUST have a wipe in ready position for the current pottier to use AS SOON AS THEY HAVE FINISHED THEIR BUSINESS! So, we can now determine the length of a trip by the amount of potty bottles it takes us to get from place to place. The trip back was a four bottle and 2- 64 ounce big gulp cups. Say what?