Car was definitely a pre-production model. Final version will not have the fog lamps. Maybe they can still do something with the side mirrors? From what I gathered the overboost function will be available over a wide RPM range so long as you go WOT. The exhaust system is similar/same to the BMW Performance Exhaust system. This car had the DCT.
I must say the car looks really sweet up close. Pictures do not do it justice. I almost threw out my neck when I saw it go by and caught the ass end and 335is