This is an NFB (National Film Board, for the non-Canadians among you) movie from 1990. Eight elderly women and their young female driver are stranded in the Quebec(?) wilderness when their bus breaks down on an impromptu detour to see the cottage that one of them went to in their youth. And really, there's no more to it than that: it's 100 minutes of old ladies talking. Seriously, that's it - a bunch of unscripted non-actors talking and reminiscing about their lives. And you know what? I loved it when it came out, and I love it in 2018. It's a charming, thought-provoking bit of Canadiana, a wonderful quiet little film that I highly recommend.
Best of all, it's available for free: http://www.nfb.ca/film/company_of_strangers/