I was actually ticket last year for this very offense by an aircraft patrol. A couple things confused me about it one being that it was the 401 and I was keeping pace with the rest of the cars in my lane at approximately 120km/h. There were definetly guys to the left passing at higher speeds (I was in the middle lane). Why would they specifically go after someone in the middle lane traveling at traffic speed? The other problem that came to mind was that I have a very common car in a common colour, how can they possibly prove that it was my car and that I was the one driving? I guess I'm wonder...