Rolled back odometer anyone?

I had thought that somewhere in the mid 70s Mopar put a scraper piece that
scraped the 10,000 digit when it turned over to next one or two
Interesting...did it make a mark? Wonder why they didnt just put a 7th roller in there. That would be a great selling point: "Our cars are designed to go past 100,000 miles and the million mile odometer proves this!"