As for the demo Versas diagrams, it may be working a different route other than the 44s, it may have been covering a broken down Volvo or just fancied a day out in the sun!
However it might be worth keeping a check over the next few days to see where else it turns up. Whatever the reason, it is a different sort of route to the 44 and it will be good to test the reliability bu pushing it on a steady uphill run west from Chester a few times over the course of the day.
This one would have got to Chester just before 5 heading towards Sunderland.