What a tit!
He didn't like that it has stiff suspension. Its a **** ing M6, of course it has stiff suspension!
The gearbox made a funny noise and he ended up taking BMW to court. Fair enough if it's within the warranty period and they wouldn't fix it but this is unclear. BMW were told to fix it anyway but he didn't like this.
So he smashes it up to prove that he is indeed a tit. The only person gaining anything from this is BMW, those replacement panels arnt cheap. Aren't the roofs carbon fibre on the M6? BMW don't come out particularly badly because he is clearly loopy.
Some people really need to learn no to restrain their emotions.