Sherpa with number plate for @wuvvum
https://www.ebay.co.uk/itm/204345014957?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=3cBmx_wjQRi&sssrc=2349624&ssuid=rDOjzoUGSMK&var=&widget_ver=artemis&media=COPY
If you charted average age of owners, taxation rate, the price of scrap and plotted political moments (scrappage, ULEZ, 2030 etc) then you’d find an intersection of all of these, which might be +/- 5 years for most cars.