All modern mass-produced automobiles are mainly built by stationary machines that weld, press, paint or haul. However, humans are still required all throughout the manufacturing process to do everything from checking quality to fitting the more fiddly bits too intricate for the robots.
However, now that drones are so prolific, maybe they, even in the form we know them in today, could seal people’s fate on the assembly line. Or not necessarily just drones, but drones in conjunction with more advanced and diverse versions of current robots.
Drones nowadays can be as advanced as the software that controls them, while they are really rather simple, both structurally and mechanically. They could have specific arms or tools fitted depending on the need and be built with modularity in mind…
Swarms of them could work together, like they are building the bride out of string you see below. It may look simple, but it requires precision (autonomous) maneuvering and, for lack of a better term, teamwork.
The basic idea is this: with the kinds of robots that are already in use, but in more evolved and capable future forms, plus the aid of swarms of drones, checking quality by eye will be all humans will get to do. That until a super-precise laser that measures body gaps to within microns comes along and is implemented/integrated too.