Woking to Carlisle(stopover)...317 miles. 4 hours and 35 minutes....40.3 MPG.
Carlisle to Inverurie....248 miles. 3 hours and 38 minutes...39.7 MPG.
Boot and back seat/floor fully loaded.
Total return trip miles a shade under 1200 miles, including local journeys.
To be honest, I've been doing these trips for 42 years,some from Cornwall, but mostly from in and around London, in various vehicles, and the C5 is the most accomplished long distance car by far.
On reaching Carlisle last night, I actually wished that we hadn't booked a stop-over as I wanted to keep driving all the way. I felt that I had only been driving sedately for an hour or so instead of belting along for 4 and a half hours.
Hope it ain't raining tomorrow because the car sure needs a good wash.