The West Country
A visit to Gloucestershire/Avon/South Wales areas by means of a Flexi-Rover ticket and whilst the weather forecast was about to take a turn for the worse, it actually produced some decent weather.
It drags the second set out into the short loop and uncouples. It then proceeds to propel the first set beyond the points, uncouples, and then runs around the second set by means of the middle track, and then re-couples onto the second, and reverses the second section onto the first section to form the full train. Bizarre.