i drive the newest version of an enviro 200 bus with all this emissions stuff on it

it's obviously a diseasal but what amazes me is that running from 4.30 in the morning (my shift this week) till 2am at night (my shift last week) they use between 80-100 litres of fuel in an entire 21.5 hours to move a 7+ ton vehicle about the place

ok, so it's rev range is from 700 rpm to 2200 rpm and it's got fancy stuff like only applying drive when you have your foot on the accelerator (otherwise it disengages drive, say you've got the handbrake on, or your foot on the brakes there is that little stutter before you can actually move off) and they are fly by wire throttle controlled etc, but the most amazing thing about them is that you can only accelerate at a given rate, no matter if you are empty or fully loaded, it will simply hold a gear longer if it's got more weight on and change up much much too early if you are empty (which makes traffic light grand prix in a bus very intresting when a fully loaded decker can keep up with a tiddly little single deck )

so yes, diseasal is the future as far as things go, but petrol will still carry on for smaller engined motors as they are now VERY efficient, for example my 1.25 fiesta will do 40 mpg on the work run while my mondeo does about 25 mpg, the mondeo though is a much more relaxing drive, which is why i am now looking at getting a fiesta diseasal, i must be mad