Certainly yes, it would be better - the value of a car goes down, do you still make an 'investment'? No, you buy a car if you need a car, we don't call buying a car 'investment', we don't encourage people to hoard cars they don't need, it contributes nothing to the economy.

The optimal situation is for cars and houses to be as cheap as possible relative to earnings, that's what we call economic growth and improved quality of life.