and a monster they are too, i've driven the new s4's (twin turbo v6) and they are very powerful so I can only imagine that those v10 buggers are something else.
My bosses mate had one, probs seen it goin round, black with H35KIN plate, think they are restricted to 180MPH.
Really quick.
It's H13 SKN, a blue avant. I can tell you for a fact that this exact car will show 165 on the speedo. Pretty sure they are limited to 155 as per any German car that leaves the factory.
If I remember rightly, when I used to cruise the length and breadth of the country in it, it was on a '53 plate and I'm pretty sure every one of those 444 horses were used to full effect by my boss. He once went through a set of brake pads in one journey back from South Wales.
I quite like seeing it around, and it lives close to me now.
Previous owner replaced it with an M6, then went to an RS4 avant and now has one of these absolute monsters...
http://www.evo.co.uk/news/evonews/253543/jaguar_xkr_75_special_edition.html