maglev

One of my favorite kinds of train is maglev.  This train can levetate by magnets so there is no friction.

http://en.wikipedia.org/wiki/Maglev

http://www.wautom.com/2014/01/gallery-maglev-trains-in-china/

http://www.i3america.com/

http://www.ubergizmo.com/2011/06/japans-maglev-train-tracks-approved/

http://www.twitr.org/

http://www.lanl.gov/orgs/mpa/stc/train.shtml

http://articles.philly.com/2014-03-06/business/47938383_1_maglev-technology-maglev-test-track-maglev-train

http://www.businessweek.com/articles/2013-11-19/dont-hold-your-breath-waiting-for-japanese-maglev-trains-to-arrive-in-the-u-dot-s

http://www.beijingholiday.com/travel-news/beijing-maglev-train-plan.html

http://www.skyscrapercity.com/showthread.php?t=489640