Some comments on the spring leaf discussion reminded me of this. Most of us have seen this old photo.
It illustrates the fact that Fords, especially Ford trucks, sometimes were grossly overloaded. The result is that today many a TT has at least one broken spring leaf.
Usually it's one of the smaller leaves. These sometimes go unnoticed because they're out of sight. If you don't look for it you won't know about it.
we have some for sale if needed,