I am nowhere near being an eco drier.
I've almost always had some form of warm / quickish car, but on my commute to work for the last 4 days I've been seeing what kind of figures I can get out the car.
On the way to work I travel on 30mph roads, its just under 8 miles so not long a journey.
The first two days the temp was 5C and the last two days it was 9C. Got better as the week went on.
I haven't taken picks of the journeys home at midnight though, motorway, radio and heating blaring, sport mode etc... lol.