but unfortunately this is the truth: they simply don't care about 'supporting' our nice Italian cars, they preferred to apply a tax which is making the state to loose a lot of money (as nobody is buying sport cars, and the ones who were owning them just sold them abroad) but, from the point of view of silly people, this tax goes 'against' rich people, so it's a vote-catcher.
Then there's the part related to investigation of the tax returns: when driving such a car you get stopped at each road control, they ask you why you are driving such an expensive car, which is your job and they put you on a 'target list' and they ask you to demonstrate that you have enough incomes to pay the car, pay the owning taxes and pay the maintenance of that car. If you're ok with the taxes declaration (as most of people is) you have nothing to scare, but the point is that it's your job to go to the court and demonstrate that you're ok, meaning that you have to pay a business-consultant to collect the documentation and go to the court in your representation.
In other words, it's an incredible situation that hopefully will improve one day, but at the moment is really a pain...
P.S. fortunately our good cars manufaturers such as Ferrari, Lamborghini, Maserati are selling very well worldwide, and don't really need the Italian market (a couple of years ago ferrari produced something like 5.000 cars, sales in Italy were 27 units
)