Hmm, I found
a Globe & Mail article dated Sept 29, 2015 that doesn't mention Edmonton among the cities Communauto served, and
a CBC article dated Oct. 9, 2018 that mentions Communauto was in Edmonton. Must have been some time in the intervening three years.
Still, point is they've been there for at least a couple years. That's an awfully long time to have been in business there and only have a fleet of 10 cars...