Of course, problems are destined to arise and can already be foreseen. Being the tallest building in the world is never easy. The next tallest, the Burj Khalifa, while only half the size, has experienced multiple construction delays due to electricity issues and elevators problems. Even if the elevator system runs smoothly, getting people from the bottom, up top, and back down again in an efficient manner will be an epic feat. A mile is an unfathomable distance to ride in an elevator. Just imagine if you had to wait for it as it stopped on every floor on it’s way down to pick you up? Or if the elevator got packed before you could get in. With the average elevator traveling at 150 meters per minute it would take around 12 minutes to get from bottom to top. High speed elevators seem to be the way to go as they can travel 500 meters in just one minute. This sort of elevator apparently is just as comfortable to ride in as the normal elevators despite the high speeds. This is fast enough to be able to go from bottom to top in roughly 5 minutes. These elevators are already being used in the Taipei Financial Center and the Burj Khalifa.