He asks, "Hey so how did you get into Triumphs?"
For a split second I tried to hold back my full Datsun-nerd response
I simply smiled and replied actually it's a Datsun. He looked confused

I've been through a security gate and the attendant said Nice Fiat! and I heard a Nissan owner ask "Who's Sunbeam Tiger is outside?"
So that's three occasions, what have you heard?