richardhead:perhaps because in some markets outright ostentation is the whole point. I would think buyers in the Gulf States, China, India and Russia would be happy to flaunt their conspicuous consumption, rather than have a nancy 'hybrid' sticker on the boot.
Surely a wealthy arisocrat will want the fastest model available, which is the hybrid!! I doubt Rolls will sell many non hybrid models at all, even in the gulf states. These new money countries are also aware of the climate "problems", so theyaren't averse to having a greener model on there driveway, in fact, you could say that they are keener to embrace the latest fashionable technology, which hybrid and stop start can be mentioned under.