Energy efficiency goes viral with the Better Buildings Challenge SWAP, transforming the conversation about energy efficiency. Better Buildings Challenge partners star in various SWAPS: beginning with Hilton Worldwide and Whole Foods Market, then the U.S. Air Force Academy and U.S. Naval Academy, next it spread to the Cities of Atlanta and Boston, and finally took over the manufacturing plants of L’Oréal USA and General Motors. Watch this 2.5 minute trailer for an overview of SWAP and to see why millions have tuned in.