Heres another interesting article on Toyota Prius and its got some facts i didnt know - 'Diesel vehicles currently account for about 2.6% of the US market, though this is expected to rise to 6.8% by 2015 and 8.1% by 2020, the firm predicts.'
2.6% .. and only 8.1% by 2020?! Surely half the cars on UK road are diesel?!
I guess it puts things into perspective.