HOMESTEAD, FL – DECEMBER 21: Maarten Griffioen from team IHMC checks in on their robot after it completed the challenge of opening doors during the DARPA Robotics Challenge Trials at the Homestead-Miami Speedway on December 21, 2013 in Homestead, Florida. The trials put prototype robots from seventeen teams through a series of simple tasks such as opening doors or walking a short distance. The competition is hoping to speed development of robots that could perform a number of critical real-world emergency-response tasks. Joe Raedle/Getty Images/AFP== FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==