Ok let me give a more considered answer; I have worked in the law for the last 7 years.
If you take it to court it will come down to luck. Ie; which Magistrate you draw.
I am not kidding. Ask any lawyer who knows what he/she's doing (and they are not as common as they would have you believe) and they will tell you the same.
Also, I am not saying I'm perfect but I know the diff between 100 and 140 km/h and as people have said, if you don't then you probably shouldn't be on the road. Maybe get your eyes checked as you might be blind in one eye and not know.