This thought crossed my mind as I woke up this morning, they'll never introduce a law that says you must have a speed limiter installed in your car as this would mean that no one would be caught speeding, which would mean that the Government would be losing out on a fairly huge chunk of revenue.
But if they did happen to bring in a law that said you must install a device that limits your speed, they'd probably make a secret guideline in the smallest fineprint known to man, that states that you must install a government regitered brand of speed limiter otherwise you'll face a hefty fine and points off your which you'll have the option to buy back at an unreasonably huge fee.
Perhaps someone already thought of this on Hexus but I thought I'd throw it in because you know the government would do something like this, considering you motorist are the most picked on by the Government.
P.S. I'd also like to point out that I do not actually drive at the time of writing...but I may be driving by the end of this year...