Surely you are all missing the point here. What you really need in place of those big heavy and smelly horrible diesels is a nice clean 2.5l V6 two stroke, from the like of Mercury or Mariner. You don't have to worry about bugs in fuel because they guzzle it so quickly (I manage 1.7 mpg) it never has time to go off or grow things Sadam Hussain would be proud off. Roll on 2007 when the tax changes and everyone changes back to petrol.
By the way Petrol was 93p a litre in Lymington on Sat. Smelly red stuff 30p.
Standing by with flack jacket and tin hat on,