1. I Spy [a text from some skank on your phone]
  2. 20 Questions About Your Ex
  3. Would You Rather Turn Off the AC or Break Up
  4. Never Have I Ever Kicked Someone Out of a Moving Vehicle But Today Might Be the Day
  5. Slug Bug (And Slug Volvo and BMW and Honda and Toyota and...)
    Suggested by @amandagracehua
  6. You Can Control the Radio if You Promise Not to Speak (So I Can Sleep the Whole Way)
    Suggested by @bluepuddles
  7. Fart Chicken (who will be the first to roll down their window for fresh air)
    A silent but deadly game.
    Suggested by @HisDudeness
  8. How Lost Can We Get Before Someone (The Passenger) Convinces Someone Else (The Driver) To Stop For Directions
    (This game has sadly fallen from use in past ten years due to everyone now carrying an atlas and GPS device in their hands and relying on turn-by-turn artificial guidance rather than dead reckoning.)
    Suggested by @andersun
  9. Why I Hate Your Mother
    I mean not my, MIL, she's the best - I mean for other couples.....
    Suggested by @BWN_7