Teleport. Like a Town Portal or simply a portal. It would be awesome. No more flying, losing hours in pointless transportation. Just cast (or press button, what ever) and you are there. Can't wait till they invent it. I know what will ruin it, though. Imagine the Airport security now. To upgrade to "Portal Security" it will include a 9hour search, checking, scanning and a ton of more things you'll have to pass to teleport that will ultimately take less than a second (loading screen not included).
This will make it the same decision between taking a train, car or a airplane to something that is 500km from your spot.
Public train will take more than 6 hours and will have a horrible schedule and lots of train switching, on the bright side, cheap.
Buss will be 9 hours, no switching, better schedule, cheaper, but still too long.
Car will be about 6 hours and will cost you more, flexibility is better than all others.
Airplane ride will be the shortest about 30min flight. It will probably be most expensive and the whole journey will likely take more than 9 hours (go to the airport 2h before the flight, delay, fly, land, luggage and so on).
Extra fast train will get you there in less than 4 hours, no luggage check, average price, you won't have to drive, nicer schedule and so on.
So to avoid all this, let's also hope that with the teleport there would be a new system invented that could say scan you in a matter of seconds and clear you for your journey, otherwise it's the ICE (inter city express train) for me. "ICE, the coolest way to travel."