What exactly is your point here? The E-class didn't get better. Its worth increased, and there is no guarantee that would continue for today's new models seeing as their depreciation (as with most luxury brand models) is pathetic.
They're classic cars from the 1950s kept shining and running. Not only did keeping them that way probably cost quite a bit, as I'd bet an E Class sold today won't have the same appeal sixty years from now as these do today.
