In car assembly lines there are often gantries, conveyor systems (accumulating and EMS), trunnions and other high level equipment that prevents the use of track cranes. First choice would be to extract heavy equipment by manitou or fork-lift, crane is a distant second best. It sounds as though Tesla aren't considering how to maintain or repair their model 3 line.

Why did people downvote you, it's an honest question? Anyway, I expect the Audi manu expert would consider this and make sure he doesn't design a system without that possibility.