"first name terms with the Pirelli rep" and prob every petrol station for fifty miles !
Tyres yes, petrol no. Supercharged engines and normally more efficient than just larger ones!
Depends on how you ride it. If you cane it all the time, that forced induction is going to be cramming fuel down the thing's throat at a stupendous rate. Ride it at a more leisurely pace, and
then you get good fuel consumption. So who's going to buy one to ride at a leisurely pace?
Shame they did this with a sports bike design. I would've liked to see a Kawasaki answer to the V-Max or Hayabusa with a supercharger; seems to make more sense to me.