I can’t help but think we are stuck on stupid when it comes to some technology. Computer CPUs double in speed every couple of years, but my SUV still has a combustion engine that was created over a hundred years ago. Sure it is more fuel efficient, more power, and burns cleaner, but it’s essentially the same basic concept of a controlled explosion causing the locomotion of my vehicle.
So now the tough question, if not this what is the answer? Obviously I don’t have the answer to that question but I would imagine that enhanced electricity is the next logical step but after that is anyone’s guess. By “enhanced” electricity I think we will see some combination of elements that will cause the perpetual generation of electricity with minimal waste and byproducts.
Hydrogen has great potential, but again it’s just another take on the combustion type mechanism. Of course this might be a mute issue several hundred years from now because I think we will a dramatic decrease in the privately owned vehicle and instead a move toward mass transit and the preferred mode of travel.
Fast forward a couple of thousand years from now and you will likely teleport or timeshift eveywhere you need to go. If it’s the later, please come back to 2013 and confirm I was right. :)