Why won't they think about these things? Do they really don't care or is it that we don't understand something very important in making cars?! I want to know !
It reduces cost and makes it easier to give a nice user experience when people are test driving. It makes it easier to manage all the different aspects of the car from a single interface.
The primary reason the car is made, in the first place, is to be sold at a profitable price. That is priority #1.
