This is a great argument for fines indexed to the price of the car, and non-linearly with speed and value and repeated occurrences.
Fine = 2 ^v^2 ^n^2 ^p^2
Where v is velocity % higher than the speed limit, n is the number of speeding occurrences in the past 12 months, p is the normalised price of the vehicle. Obviously these parameters could be tweaked.
The result should be that frequent violations cost much more, cost is proportional to the increased danger, and rich people feel the cost of violations.
Or they can just hire more police and deter crime with actual hard work instead of building a nanny state running social experiments based on how nice your car appears.
I can see that you have sand in your underpants about getting infringements for breaking the law. It is obviously uneconomic to have very expensive police officers enforce traffic crime when automated cameras are so effective. What you are really arguing for is individual exceptionalism for rich people to violate speed limits.
It isn't a "social experiment" to deter crime, and calibrating punishment to have an actual deterrent effect has a long precedent. If it is "nanny state" policy to set speed limits that penalise repeat offenders and hoons in high powered cars, you will find it has broad community support.