I have just bought this book. Very interesting if you are curious about Motor Rail the company. If you are only interested in drawings it is not the book for you. There are two locomotive plans, a proposed 3 axle type U that is new to me, and a very small 3 ton locomotive from M and R in South Africa. The Moseley book is the one for drawings.
There are intriguing pictures of standard gauge Simplexes, including a type G, and quite a bit on the products that they diversified into, dumpers, trailers, concrete breakers....
One fascinating fact that emerged was that in South African mines in 1982 there were no less than 5782 narrow gauge locomotives at work at the peak of the mining boom, and a lot skulduggery went on between the various suppliers to get the business.
The text reads a little awkwardly in places as Alan Keef himself is obviously part of the Motor Rail story and he hops between first and third person.
In brief, an excellent inspiration book and a very interesting behind the scenes insight.