I'm an absolutely diesel fan - since we have our E 280 CDI! It's just the best combination of comfort, speed and fuel economy for long distances on the autobahn. But a supercar like the R8 with a diesel engine. I don't really know. The V12 TDI is just perfect for big cars like the Q7 or A8. The are build for long distances, have the comfort and space for trips through germany.
So, I have mixed feelings about the R8 TDI. On the one hand, this car will be absolutely awesome - especially because of the torque etc, but on the other hand, if I want to get a car for long distances with a lot of comfort I would go for an A8 or smaller car, like the A6, 5-series or E-Class with a diesel engine. They are more economical then the R8 and also very fast.

So, V12 TDI - yes, when it will come with A8 or Q7. No, if they want to put it into the R8! This car should get the V10 out of the Gallardo. It is still a sportscar...