GTRUPP; you are approaching this the wrong way. Manufacturing anything requires materials, labor, infrastructure, energy inputs, taxes to be paid, etc. ALL are COSTS!!!
Your best bet is to go to your local library and take out a book on Accounting 101. That will give you some idea where those costs belong.
Having said that, the average manufacturing cost, including all the items Iisted is apout 1/3 of the final manufacturer's suggested list price. That does not include after sales costs, such as warranties, advertising, public relations expenses, and other "non-manufacturing" costs. So the barebones manufacturing cost for a $21,000 car is about $7000.
The dealer pays the manufacturing cost plus all the manufacturers' non- manufacturing" costs plus profit for the carmaker. The dealer "discount" from the list price varies form about 15% for small cars, to as much as 35% for luxo boats. So dealers push big and expensive cars, and manufacturers here push big vehicles, since they make more money on them. Both Ford and GM lost money on every small car built in the US, as much as $1400 on each Escort. The new Fiesta will be built in Mexico. GM builds the Cruze in Lordstown, Ohio, with their new reduced wages. Hope they can make na profit on it!
The Big Three have had ongoing difficulty making a profit on small cars, which are the bread and butter of foreign carmakers. Honda and Toyota make money on all small cars they sell, since their manufacturing structure is much more efficient.
Foreign car makers also are able to make money on lower volumes, and don't easily run ito the red when buiseness is down.
So, the next ime you discuss these "obscene profits" in the car business with your dad, keep in mind that, as other point out, everything is a COST, and the Big Three would be out of business without large vehicles since they can't make much money on mid size and small cars.
That $20 sport shirt you just bought cost probably $2 to make in China or India, and the rest is transportaion, advertising, warehousing, marketing, sales, and the overhead of Walmart or Sears. Nothing immoral about any of this. The exception would be a well known female fashion retailer who uses slave labor in third world countries to make the product.
Some products are almost all advertising; those oil additives pushed by racers cost maybe $0.50 per can to make and sell for $5.95.