Some where I heard or read that Landy out of all of them decided to take delivery of his car with out the dip and that he progressed with his own lightweight program to make it the lightest with out dipping. He was apparently not trusting of the dipping because of his knowledge that they(the cars) would split down the middle. I could be wrong.

I stand corrected, Landy took his time to neutralize his car after dipping like stated below. The acid would keep working on through time, especially in corners and fold creases and such. A kind of an introduced cancer I guess.