I am about half way through the second volume and really enjoying this read.
It is two volumes (about 400 pages each) with a ton of period photos and technical drawings etc; all from the 20's and 30's (and a bit beyond). Its written for a general audience with motoring interests but does provide a bit of detail for the techy.
It is UK biased though it goes into detail re Ab Jenkins and why the Brits came to Bonneville and other contemporary activities; water and land speed ventures, car manufacture in his own name (I had no idea), the Brooklands race track, fast sub hunter and MTB's for the UK military (WWII) that Railton used his connections to source US engines for and etc .
Quite a bit of detail on the Campbells, John Cobb, Eyston etc (water and land), the development of hydroplane boats, references to twin clutch shifting (ca 1936), monster aero engines and etc. Gives a lot of history and context, not just a bio.
Its big and spendy (redundancy money put to good use) but I am pleased I did.
Any other recommendations for books to read in lock down?