Is this handbook still relevant in modern cars? I feel the new cars have so many hidden panels and electronics that you’re not expected to fiddle with the insides.
I really wonder how practical this is though. The bicycle, for example, dates back to da Vinci, but we only became good enough at manufacturing to make the precise parts needed by the 19th century. having the diagrams is all well and good but we will also have lost the means of manufacturing reliably and that is going to be pretty tough to replicate.
All of which benefits from any type of work producing engine, since the core leap you need to make is to get away from being solely dependent on human labour as a power source.
Pretty sure it covers modern cars fairly well.