Great video.
Bring a trailer has a segment "where they rust" showing rusty cars and where to look for rust on different models.
I looked over a 190sl that I helped sell, and the owner told me that there was no rust in certain areas as he looked. He was correct but the reason there was no rust was that the previous bodyman just cut out entire panels so where there used to be two panels there was just one now (no much inner rear fender on one side was remaining)
I have seen something similar for the rockers on a 280Sl where there was one entire inside strengthening panel that was omitted when rust repairs took place and a new piece of metal was bent to shape and placed on top of the rusty metal and welded in place and with seam sealer put in the right location to replicate a seam it looked almost original.
All I can say is be careful if you buy a rusty car - its that tip of the iceberg thing......
