I expect to produce a surplus of car parts for some time. I have engines and car bodies on the market, each for 40,000 each. At this price you'll make better money buying my surplus and selling your extra cars on the market than you would if you made the engines and bodies yourself.
As it turns out, you also have a ready buyer for your extra cars - me!
Why would I offer to let you make more money when I could? Well, I'm going for high score and making more money isn't always the best way to do it. I think selling your cars instead of mine will help my vendor score. So, if you want more money - buy my parts and sell your extra cars.
-Dave
One-Stroke