10 years? I think its already here lol, with brand new cars anyway, obviously it'll take time to filter through to the 2nd hand market. Small charged petrols are the way to go definitely, cleaner than diesels, lighter than diesels, less emmisions shite than diesels, and do near enough the same MPG for the performance.
What frustrates me though, is the technology to make things more efficient and cheaper to run (not just in cars) is always so expensive only the rich people can afford to save money!
I'd have an EcoBoost Fiesta ST if I could afford to buy one lol, cheaper tax than a HDi, same mpg and 180bhp! A guy on my road's just bought one, needless to say I couldn't keep up with it! 
What frustrates me though, is the technology to make things more efficient and cheaper to run (not just in cars) is always so expensive only the rich people can afford to save money!
I'd have an EcoBoost Fiesta ST if I could afford to buy one lol, cheaper tax than a HDi, same mpg and 180bhp! A guy on my road's just bought one, needless to say I couldn't keep up with it!