Who buys these vehicles? Sure the market decides how much something should cost but people like to criticize trade unions, UAW, teachers unions for being greedy but how much does someone need to make to buy a new car or a house or new tv's, furniture, etc... You cut the pay on all of these claimed over paid jobs and what happens to demand?
We could look at health care costs in a similar way. Its getting crazy expensive but look at all of the jobs it creates and good paying jobs. I could tell you how to cut the fuck outta health care costs tomorrow but what does that do to that industry?