So now it is a good idea to cycle to increase privacy as well as for environmental and health reasons.
I think this is a very bad idea. It may help a few high profile cases but the costs are very high indeed.
Of course we are given no chance to vote or have any say on this. Pity we don’t live in a democracy.
[Update] For a professional view on the practicalities see Schneier on Security: Vehicle Tracking in the UK.