Yes, me and my Green TDI succeeded!
Result: 71,3 MPG
Distance: 82 miles
Average speed: 48 MPH
Direction: back and forth
Weather: light rain, 19°C, 10 MPH wind from different directions
80% highway at 62 MPH, 20% city driving
Couldn't believe it at first because it was raining and I had bad luck at most intersections. I even had to brake on the highway for a bunch of pheasants crossing
I did check the actual consumption at 62 MPH on the same stretch as the last time, and fluctuated between 78,4 and 81,1 MPG! It seems to be a massive improvement: 69,2 - 71,3 MPG stock.