Some decades ago now (cough) I had an ex police motorcycle. Some may remember it .. the Velocette LE or 'Noddy bike' as it was known.
For it's day it had some quite advanced features in some respects. Water cooled engine and shaft drive. This was offset by a hand operated gear change and looks that only the wildest imagination could call
beautiful.
One night it froze up and ice popped out both cylinder heads, but .. being a side valve they were easily replaced in less than an hour. The electrics ? ... all I can say is Faraday himself would have discarded half of them as dud equipment ...
https://i0.wp.com/www.bike-urious.co...ddy-Police.jpg