@BillRM,
BillRM, I can't disagree greatly about your assessment of auto company management. I have also felt that the Big 3 did not emphazize more economical cars enough, which I think they could have emphasized more without also losing out on taking advantage of larger SUV and truck sales. But no corporate management is perfect, and they do not have crystal balls that see the future perfectly.
It is my opinion also that another industry that has not adjusted with the times is the RV industry. There is a great deal more that could be done to re-design RVs to be much more aerodynamic than they are now. They are beginning to catch onto the problem and work on it, but they could have done alot more previous to this date. The RV industry is but one example of how much more we can do to save fuel at the lower end of the spectrum than at the upper end, for example, you save far more fuel by upping the mpg from 10 to 15, or even from 10 to 12 mpg with a truck, alone or towing something, than you do with a car increasing from 30 to 35 mpg, I would invite anyone to do the math.
I still think however that ultimately the most efficient driver of change is consumer demand, and it is up to us, the consumer, to demand more efficient cars, trucks, RVs, etc. So we could blame the auto manufacturers for not foreseeing the rise in fuel prices, but I think it would be more appropriate to blame ourselves, the consumer, for not fully anticipating the changes and making the changes in our own lifestyles ahead of time, by economizing on our lifestyles, vehicles, and home efficiencies.