In 2018 we landed at Prince George in Canada (CYXS) looking for 100ll. It was listed but nobody know where it was. We finally parked the plane and walked all over the airport (it was big) asking anyone we saw. One thing we did see was hundreds of parked airplanes, mostly small high wings. There were so many it was mind boggling. Before finding someone that told us where the avgas was hidden, we asked several people where all those Cessnas got their fuel. The majority of answers was that most of those planes hadn't flown in years, and probably never would.