On a road trip you may have a few suggestions as to games...here is one that may make you crash. Every motor home/trailer that had a name/insignia on it you have to place the word 'anal' in front of it.
EX: Skylark = Anal Skylark, Road Warrior = Anal Road warrior, Surveyor = Anal Surveyor. I am not making any of this up! Have the person with the worst sense of humor drive, so that you don't all end up in a terrible crash.