They might be referring to this article: https://electrek.co/2019/07/23/tesla-giant-machine-produce-m...

Discussing the frame / body construction on the model y.

“‘When we get the big casting machine, it’ll go from 70 parts to 1 with a significant reduction in capital expenditure on all the robots to put those parts together.’”

And a significant increase in the cost of collision repair, if it is even economically possible at at all.

My understanding is that it can be repaired for the same approximate cost, but it requires a different technique (welding)?

So it’s a training opportunity for the workforce to earn slightly more per hour and open up new job opportunities with the same margins.

Also consider they are foreseeing a world with fewer accidents, specifically accidents with Teslas.

I thought they were almost throwaway items in the case of a collision these days anyway? You hear a lot about Teslas being written off even for minor cosmetic damage.

I'm sure you know, but that comes down to cost. Repair quotes from Tesla area astronomical, so it's easy to write a perfectly repairable car off just because the finance doesn't make sense to the insurance company.