seeing as we are experiencing an unprecedented crackdown on civil libertys in the name of health and saftey i can see it happening. especially seeing as the current establishment seems to be introducing more and more stealth taxes, it will probably initially come in the shape of some kind of surplus charge on your road tax, (in addition of course to the new carbon emmision tax), untill someone decides that they are too dangerous then introduce a massive fine for having them installed.
I guess that modding is a form of counter - culture, and any establishment doesnt appreciate people not doing exactly whats expected of them. plus there is the whole boy - racer/ hoodie/ joyrider stigma attached to it, through ignorance and a lack of experience the timid individuals in charge fearing some imaginary plague of fast car crime will be eager to remove our ability to start one. (even though the cars we see revving and blaring in the tesco local car park are often unmodifed "shopping trolley" cars).
Although the modding scene is a fairly social class- free zone ( modded lambos share the raceways and drag strips with little fords ), there is alas a small sect of middle england who would like nothing better than to see us all behind bars, i was occasionally turned away when trying to park my old ford, usually by middle aged couples with nothing else to do, reason being we looked like "boy racers" and weren't welcome in thier road. the typical middle england NIMBY attitude, uurgh!
we will have our treasured mods for ten, maybe twenty years more, but once the mediocraty and the burgeoning civil service wielding the sinfully boring dull blade of health & saftey truly rule the country kiss goodbye to them.
but remember its for your own good.