As valid you point is, it also holds true for taking a Uber Pool or Robo taxi where a drunk or crackhead decided to jump in and join you, or you them.

The only difference being if it happens on a Uber Pool ride you don’t have the option of “jumping on the next one” without forking over a sum of money or canceling your trip.

Not to mention at the same time you are stuck in the same congestion caused by a inefficient (though comfortable?) mode of transportation.