>>>that was using every trick I had learnt over years of driving dealership cars with the fuel lights on!<<<
Now that's funny.
But where are you finding a 56MPG average with a Prius? The magazine tests all seem to report real world mileage in the high 30's / low 40's. Obviously, the mileage will be fantastic if you do mainly city driving on electric, otherwise it's just another small gasoline powered car ruining the environment
Hell, I can 'average' 50MPG or more in my TDI if I drive it gingerly, but that's not a true indication of the real world mileage - more like 42MPG in my case.