I'm on holidays in Norway, and this morning I left my hotel in Norefjell, heading for Oslo. The first 20 km are downhill, and so after leaving the parking lot I didn't need the engine anymore.
The economy gauge freaked out:
This are km/L, not mpg!
A bit blurry, but is says 90.8km/L
And guess what? The gauge cannot indicate 100+km/L. The AS&G also fails.
The engine is still cold, about 15 km from the hotel. I suppose this proves the DFCO works.