I don't really find the straight line speed that surprising...a stock e92 M3 would have (I guess) around 250rwkw? plus if it has DCT it would be cutting around 0.3 sec on each shift too...it all adds up.
btw, I really hate people that don't let you past them easily on track...like what that M3 driver is doing...It is so pointless trying to hold people up!!!
2010 BMW e92 M3 M-DCT (Frozen Grey/Black) - Sold
2007 BMW e92 M3 6MT (Jerez Black/Palladium Silver) - Sold
2002 BMW e46 M3 SMG (Titanium Silver/Black) - Sold