Cars are not phones, and will never be. American lower class or Chinese middle class are not going to shell out $70k for a new toy every two years. Cars are not going to be made with 60% margins. You cannot wear a car in your pocket to show it off to your relatives or business partners.
Apple's business model, in short - is selling mediocre hardware for premium prices, and mask it with excellent software. Optimizing software to make it 10x better, faster, using less battery - fairly common. For any activity that interfaces with the physical world - forget it - we're tapped out, making 2-5% improvements per year. No amount of refinement will make a $20k econobox sellable for $60k
(also, ironically, LG dropped out of phone business)