I just drove 400 km round trip (dropping the kids off at the grand parents for 4 days)
150 km was 125 km/hr, the rest 105-110 km/hr.
Several foot to the floor passes on the two lane section, a bunch of lights and some traffic on the way out.
5.3 L/100km in the TDI. I'm happy with that, but it's impressive how much the gas cars have caught up.