Some of these are down right horrifying when you look up and see these in your rearview mirror.
  1. Car filled with clowns
  2. Driver wearing a hockey mask
    How can they see?!?!,
  3. Passenger wearing a hockey mask
    Less terrifying than the driver but still scary just the same.
  4. Driver or passengers wearing monster masks
  5. A large doll in the passenger seat
  6. I swear that was a child driving the car
  7. Woman putting on mascara WHILE driving
  8. Sex acts, so many sex acts
  9. A car rear ending the car directly behind me
  10. A car spinning toward my car
    After it had been hit by a semi
    Suggested by @ChrisK