I've just changed my vote too, im now in the 50-60 mpg range!
Im very happy with that considering i dont always drive like an Eco Angel and considering my average speed is only 23 mph, i'd say that pretty much town driving all the time!
On my longest Eco run, sitting at 57 mph (cruise control nearly 100% of the time) all the way to Amsterdam I got:
Left early Thursday morning in July 2010
from Cambridge to Dover
Ferry to Calais
Drove to Amsterdam parked in a park and ride, had a wicked stagg do for my friend
Drove back all the way through Holland and Brussels to France ferry to Dover and ended up at Stansted before I had to fill up!
I made it 670 miles! But then again the coast of Holland, Brussels and France are really flat...