Ahead of the Denver Broncos vs. New York Jets NFL international game in London, WSJ went inside Tottenham Hotspur Stadium to see the hidden engineering that helps maximize revenue by transforming this English football pitch into a stage for world tours, a boxing ring and even an American football field. 0:00 This English Premier League field vanishes in minutes 0:33 The challenge 2:11 The solution 7:38 The payoff Tech Behind 'The Tech Behind' explores the amazing engineering, computing, science