"There is a 2+ year waiting list for your new car sir" that drove Sir John Harvey-Jones to distraction, to the modern era of parts assembly, and on the spares front "Here is your touch up paint sir, that will be £49-00 please.... Thank you, and here's you nice (but totally OTT) receipt".
Much longer than 2-years MZ, I waited from 1976 to 1982 for my first Plus 8 and that was a direct order on the Works - with some Dealer's it was up to 8-years!

It was however worth it...