Last evening I went for dinner hillside near my home town.
It was a 68 Km round trip.
Here is the elevation profile of the road:
It's a 34 Km road that crosses several small towns, max speed was 80 Km/h due to several speed cameras.
Starting elevation is 97 meters, ending is 329.
Ending mileage was 3.9 L/100Km.
By comparison, the week-long average consumption of my all-urban travelling was 4.4.
It seems that hybrid cars are not only for the city.