Joe,
I suspect that trend will continue as dealers fight to stay alive in the face of declining new car sales. As the baby boomers begin to retire in 2013 and beyond, I don't believe that dealers will be able to reverse the negitive trend. There will be some dealerships that will not survive, but they are bound to drag down service costs in their market area until they exit.
To counter the decrease in dealer prices, I believe we must keep an eye on costs, educate our customers and have great customer service--all of which we should be doing today. I think there is an opportunity to capture younger customers with the use of social media and by offering some 'hip' products, such as, low cost wheel and tire packages, dual exhaust systems, performance packages, etc.--These kids are the key to countering an aging population if you can make them your customers TODAY.
Okay...back to my coffee. Have a great weekend.