PHOTO: A Secret Service officer is seen with an attack dog outside the White House on Sept. 25, 2014 in Washington, DC.
Brendan Smialowski/AFP/Getty Images
<a href="http://www.sodahead.com/fun/plans-for-the-hyperloop-a-high-speed-transit-system-linking-los-angeles-and-san-francisco-have-bee/question-3864783/" title="Plans for the Hyperloop, a high-speed transit system linking Los Angeles and San Francisco, have been released. Would you use such a system to get from one town to another?">Plans for the Hyperloop, a high-speed transit system linking Los Angeles and San Francisco, have been released. Would you use such a system to get from one town to another?</a>
 
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