And don’t forget about the local lots where you’re keeping the manufactured cars. If you’ve ever purchased a new car, you know how annoying it is to get car with the color, engine, drivetrain, and cabin options you want.

If there are lots of variations of a vehicle platform, then dealers and stores will use often their space to stock a little of everything, or maybe a lot of the popular config and next to none of some other configs.

Less variation means dealers and stores are not shipping inventory around as much, and they have more stuff on hand for impulse purchases.