Yes, they were in my head as well. Who knows maybe they might adopt Visa or mastercard - bitcoin credit cards or something of that nature.
But as we move into a more digital age, I can see armored trucks businesses that carry loads of cash going out of business
Armored transports are probably the last ones who are going out of business. Even with all the digitization that's going on, there will always be material goods of value that have to be moved from A to B.