Some time a go I saw a M-performance part to hold a Go Pro on the headrest of the seats.... This way you had a Go Pro hanging in the middle of the car (not the front holder). I can not find anymore for the M2
I can only find it for the M240i...but I imagine the seats are exactly the same?
http://www.realoem.com/bmw/enUS/show...diagId=03_4095