Spent the afternoon interviewing Zara Phillips at Gatcombe. It being equine central and all, the most expensive vehicle was a 40ft horse lorry, probably worth about £250,000!

Mr and Mrs Mike Tindall drive a Range Rover and Range Rover Sport – both suitably plastered in Gloucestershire mud.

My A6 Avant seemed to get admiring glances from the stable girls though – maybe they just like a car with a huge boot for their dogs?!

Tomorrow I’m picking up a Tesla Model S. It’s the first time I’ve ever gone all electric for a week. Slightly nervous I’m going to run out of juice somewhere but we’ll see.

The A6 Ultra has been a major revelation though. I’ve been hammering it around for seven days and still have half a tank of diesel left. It’s big, comfortable and superbly refined in the cabin.

It may not have the presence (or the price) or a Range Rover, or the economy of a Tesla but as a all-round family car, the A6 really is pretty hard to beat.