I guess this is Volttro? At least it is fast and yes, it is that well known Norsk 343 with tuned quattro powerplant, nice incar video:
http://www.youtube.com/watch?v=qpIrsF9Qo58

I love this car Never seen any incar before though, thanks Jani.

Bit of a random one, that engine is a volvo D5 bottom end with Audi head!!! Apparently its a rare 25v Head so 3 inlet to 2 exhaust per cylinder.
Adam

Love this car sooo much