Unless it comes with the ability to eject participants, how would that help?

you automatically charge $500 to the passanger's credit card, and self-drive back to the depot to be cleaned

The cost to clean (and repair damage) and opportunity cost of not earning money in the meantime would be far more than $500, and far more than how much most people could afford to pay.

> Unless it comes with the ability to eject participants, how would that help?

System locks all doors and calls police?

I highly doubt police would care. People trash hotel rooms all the time, and they might escort people out of the hotel, but recouping any costs is a civil matter for the business. And good luck breaking even via that avenue.

And if it turns out the thrashing of said car was an in-cabin fire? You just locked them in.