Passepartout, I agree with you in today's technology, but I was talking about future technologies. Let's look at cars over their history.
Initially they had crank starters and simple gear shifts and brakes, then cars got bigger engines and became much heavier due to larger frames, seats, etc.
Then we got automatic transmission, air conditioning, and power brakes. That car stayed pretty much the same until computers came into being.
Now we have self driving cars, computer assisted everything, and eco friendly engines.
People will demand electric cars due to environment concerns, etc. Tesla is the obvious leader in terms of battery technology, but I expect it to significantly change, and my horizon is the next ten years. The only thing that would derail it is if we find an alternative that is even cheaper and cleaner (solar, hydrogen?). I also don't think we will need/use cars as much in 50-100 years due to technology enabling more remote interaction. I actually believe that we will have people traveling in drone like machines also.