Interesting, to be honest, I don't see this often in here, GTA, Canada.
Maybe people here are just very lay back and don't really give a damn what car do you drive thus they don't give you sh!t.
There were couple of times where there were these stupid drivers tail-gating me like I thought I have back seat in my Z.... simply I'll just downshift without hitting the brake, so my car will slow-down all of a sudden and that idiot behind will sh!t his pants.
Of cause, I have my foot on the gas pedal so I'll get away before he can hit me...
I rarely do that... once in a blue moon maybe.