Anything with such as that with 1000bhp (and 4 turbo chargers is it?) is going to be hillarious to watch, would be nice to see it pitched against some other super cars such as the McLaren F1, F50, F40, XJ220, Bugatti EB110, Zonda even though it would still win a drag race, never seen one being tested around a twisty track yet lol.
Can't see how a W20 version would be would be available/in development as VW made a huge loss with the current Veyron and compared to its development and retail costs.