other than these tests I actually rarely see vending machines. are they really representative or popular still in usa?
There are also some restaurant startups that are trying to reduce restaurants to vending machines or autonomous restaurants. Slightly different, but it does have a downstream effect on vending machine technology and restocking logistics.
What country are you in where you don't see vending machines? Did you used to have them?
I walked into a Fred Meyer yesterday and saw probably ten vending machines. The Redbox DVD rental machine outside, then capsule toy, Pokemon card and key duplication vending machines, filtered water and lottery ticket machines, Coinstar coin counting machine...
I guess you've never been to Asia, either.
It's a big world.