It would've been interesting to be a mechanic where they serviced these things - one car to work on all day, getting so familiar with it, how the jobs would've been refined to get them out again, parts kept in stock, or not in stock. I once worked on a large fleet of Bedford trucks, more than one model, but we got very familiar with them, knew all the tricks.
We had one London Taxi on an island where I spent 10 years, I did some work on it, and a story that would get this thread locked.