They literally showed a clip of a robot cleaning the car in the announcement. Also perfect task for Optimus.

I straight up do not believe that Optimus is capable of vacuuming a car unassisted without damaging itself, the car or the hoover.

Like any robot on a vehicle assembly line, it’s going to be trivial to get it to follow a pre programmed path. All the cars it has to clean are identical…. So actually it will be simple.

what if the robot can exchange it's arm for a vacuum?

sort of Kentucky Fried Movie style :)

Chainsaw arm ala Evil Dead and I'm back on board.

Groovy ;)