I thought this was funny, the new issue of Hot Rod has a readers opinion column of what the coolest cop cars were. Of course someone mentioned the "FBI GNX's". Took a picture so you all could see too! Gave me a chuckle.
Part of it has to do with the car itself. It was a bit of a mystery to some people back then how they worked. Tales grew taller as time went by. Information wasn't as readily available as it is today. So it just added to the cars mystique.
Yea I had to store mine in a self storage building for a while. The young attendtant told me I had a nice Monte Carlo. I said thanks and drove on. I figured no need in advertising what was really being stored there anyway.