John Cena guest stars on Syfy's "Dream Machines" Tuesday at 10/9 p.m. CT. (1:40)

All WWE programming, talent names, images, likenesses, slogans, wrestling moves, trademarks, logos and copyrights are the exclusive property of WWE, Inc. and its subsidiaries. All other trademarks, logos and copyrights are the property of their respective owners. © 2013 WWE, Inc. All Rights Reserved. This website is based in the United States. By submitting personal information to this website you consent to your information being maintained in the U.S., subject to applicable U.S. laws. U.S. law may be different than the law of your home country. WrestleMania XXIX (NY/NJ) logo TM & © 2013 WWE. All Rights Reserved. The Empire State Building design is a registered trademark and used with permission by ESBC.