Just curious, but I suspect the kind of person who participates on a car forum is more likely than the average owner to talk about their car to other people.
When I was driving the Micra loaner, I talked about it to all kinds of people and let friends & family try it out.
OK, so more than a few of those conversations began because people who know me said, "OMG WHERE THE HECK IS YOUR OLD FIREFLY!?" (Which I've had forever.)
(Reality check: from Micra to Firefly)
Unfortunately, we don't have a Nissan dealer in my small city. So discussions were unlikely to lead to "I think I'll drop by the dealership..."