Tangential: I went through a McDonald's drive thru yesterday and there was a robotic machine filling up our drink orders. I'm not sure how much human intervent

Tangential: I went through a McDonald's drive thru yesterday and there was a robotic machine filling up our drink orders. I'm not sure how much human intervention it required. A human had to place the lids on the filled cups. I didn't see if it had a hopper to drop empty cups into the filling area, or if humans had to do that part.