Previous owner handywork stories

Once worked on a friends car he had just bought cheap.(Know why now)

71 Duster. Fixing e-cable on passenger side. Noticed some foam under rockers.
PO used expandable foam to fill entire rusted out rocker panels on bothsides!
Also between inner/outer rusted sheetmetal on rear wheel well and quarterpanels! WOW.

I told him there was enough foam in this car, that it probably could float.