I've made it a point to ask my drivers (usually Lyft) in every ride, "How's driving going?" and "Been driving for long?"

As a result, I've heard drivers lament about actual vomit and other weird problems. From my (much) experience as a rider, all of the vomit stories have been very legit sounding. (Of course, if there were fraud they probably wouldn't mention it)

Surprisingly, one of the things mentioned most often is passengers still trying to drink in the car. Like they will open new containers discreetly or conspicuously, at times even against warnings from the driver.

In one story, they charged the passenger for cleaning not because they threw up, but instead because the opened beer cases they brought in to the car had leaking beer cans so now the whole car smells like beer.