[McNulty2]

"don't have to tip" is a completely separate and solvable issue without autonomous vehicles.

[lotsofpulp]

It isn't when it is cultural. There is nothing forcing people to tip, except not wanting to feel shame or be shamed by others. For example, while out on a date.

[ergocoder]

Or being harassed by waiters and waitresses. It's rare but happened to me twice!