From Slate:

Jeffrey Tumlin, a strategist at San Francisco-based transportation consultancy Nelson/Nygaard, and interim head of the Oakland department of transportation, predicts that self-driving cars could become vehicles for prostitution services — essentially fitted out to be self-driving brothels.
Putting aside for a moment the very serious questions a sex-on-demand robot car raises about safety and human trafficking, think about the mess. Perhaps these vice cars will specialize.

But even so, it’s still not a stretch to imagine that people—teenagers, adulterers, or other couples caught up in the moment—will avail themselves of the perceived privacy of a driverless car during a standard trip.

Do you really want to be picked up by a self-driving taxi that has someone’s used condom on the floor?

More fun and astute predictions from Jeff Tumlin here.