Cobrar - the US auto industry lobby spent billions fighting the system at the regulatory level rather than the congressional level. That is until the early 70's, when they capitulated on fighting the proposed "very costly" regulations (mostly emmisions) and put their efforts into developing the technology to comply and passed those costs onto the price of their vehicles. And, with a big tip of the hat to C.A.R.B, we had 49 state cars and trucks. And the rest is history.
I'll have to defer to the facts you cite as to the approach taken prior to 1980, my tenure in the industry is '80 to current. That said, I lived inside the beltway for a while and the difference in relative industry approachs to managing their respective agendas (lobbying) was, and remains remarkably different. Auto is non-existent.
The sole exception to that is /was a single congressman from the Detroit area, now retired, who is married to former (Ford competitor) Governmental Affairs VP. That particular OE enjoyed the fruit of that relationship having received the unique benefit of some significant advantages in their bankruptcy. E.g. Tax loss carry forwards and debt forgiven.
Probably just a coincidence. ;-))