Witt,
There are no mysteries here. My wife has been a Financial Analyst for Ford for 24 years, and that has been mentioned many times in many posts over the years I have been participating here. You are too new here to know all that, unless you've ferreted out these posts over the years. So you may say I have a vested interest in the health of the US auto industry (I do and so do you) but more importantly, I've driven as daily drivers, Fords for the past 24 years--something few people in a Mercedes group will admit to!
I have been getting into the book, so far it is mostly related to GM and some of their decisions regarding the J-Car (Chevy Cavalier, Cadillac Cimarron, Pontiac J2000, etc) rather than the entire industry, but I have not gotten that far into yet. It is arguably far more tabloid than investigative journalism, and I'll provide you with plenty of examples when I'm through! Here's two, however: at that time, Detroit made the entire car or darn near all of it. Now, they just assemble. They are out of the parts business; Delphi doesn't just sell to GM, Visteon doesn't just sell to Ford, and Bosch doesn't just sell to Germans. Yates made a big deal early on about how unbelievably wonderful the first Honda Accord was certainly in comparison to what few offerings were in its class. Well, today, the Accord, the Camry are totally unremarkable cars--only because everyone has something in its class, and all are quite good: the distinctions are getting very subtle. Why, look at the highest-end Camry--compare to the Avalon, and the low-end Lexus. Even Toyota is competing with itself! And in that mid size class everyone has really good offerings. GM's tops the fuel economy; Ford in safety; you can get a lot of car for the money if you choose a Hyundai. That was NOT the case at the time the book was written and certainly even less true when Accord Version 1.0 came out. It is a very different world with different cars of higher quality from everyone.
But one thing is very obvious, ALL the companies are very different than the companies described in that 1983 tome. You might not necessarly know or appreciate that unless "you are here"; you don't know or see how Ford (we have not gotten to them in the book yet) is a very different company today than it was a mere 3 years ago; vastly different than 5 years ago. GM, Chrysler are too, as are Toyota and Honda. Entire US industries and many companies have come and gone in the time since that book was published.
Biased, yes, in terms of the importance of the automotive to the US economy overall; but realistically, it is US manufacturing in general (of which automotive is only one part) that I find paramount. There are those that don't understand that, and perhaps never will; and here we have our economy today. No sanguine economy can be based on pushing paper or money around. If you don't have value-added manufacturing (which can include of course, some non-traditional "manufacturing" such as agri-business and similar--does not have to be all "hard goods"), your economy will eventually fail. We have in the USA too many "Wal-Mart" shoppers for everything, that put price as the one and only thing in consideration. My goodness do we really need a Daewoo car in the USA? Can't find an appropriate subcompact from Honda, Subaru, Toyota, Ford, GM, Chrysler, Mitsubishi, Suzuki, et al? We do for those that have to have new for the lowest price. They bought Yugo's too, once upon a time. Nothing good ever came of it but a lot of great stories.
Back in May or June I made a comment that we are in a recession; I was called to task on the subject by other members here either non-believing or playing devil's advocate and asked to submit proof. Well, 6 months later the government says we've been in one nationally since December of 2007; Michigan has been in one since December of 2000. I tell you I'm not clairvoyant; I just live in Michigan. Nobody was willing to admit--in an election year--the very obvious truth.
I continue to read the book, but 25 year old quotes from long-dead executives like Delorean, and old books like this are more history than a learning text.