I've never let what others have thought or done change my opinion on cars that I like or dislike, lf I like something I like it. A lot of Honda Civics have been ruined by teenaged boys making "improvments" to them, but that doesn't change Civics as a whole, they are great little cars. Hey, I like old air cooled Vilkswagens (and own two of them) and the fact that Hitler commishioned them and Hippys fell in love with them in the 60's doesn't bother me. I guess I'm more opened minded than that.
To me a car that would be embarrassing to drive would have to be based on the car itself. Ugly, badly built, unreliable or such. Like an Aztec, Juke, Sol, xB, ect....