A newly announced highrise for Jumeirah City in Dubai will dwarf the tiny Nakheel Tower and render the current title holder Burj Dubai woefully inadequate. Among the numerous features of its design which will stand out for their audacity and scale, its main elevator is to be a vertical “200km/h bullet train.”

http://www.gizmodo.com.au/2008/10/the_plans_for_the_155milehigh_skyscraper_in_you_guessed_it_dubai-2.html