Much of the population? I live in one such place with many bikepaths and bicycling tradition where some people bike even in winter despite it looks just like on the video, but I've never seen old people risking it - for good reasons, as falling down can be deadly for them. My own grandma wouldn't be able to get anywhere the public transport doesn't go (many many places even in an EU country) - and she's one of the more mobile, more motivated seniors there. The others would be fucked.