Have you ever been in a dealership in real life and he told you that you own too many vehicles so you can't buy a new one? 
Have you ever kept running after you got shot?

Scripts are not real life so this arguement is invalid.
Anyways, I agree with the idea for about 50 percent. It is not about cars being out of stock, but rather about the fact that the economic is sort of out of balance with people buying 5 cars.