One Tough Mudder of a challenge

googletag.cmd.push(function() { googletag.display('div-gpt-ad-1461251439213-0'); }); The stoplight switched to green and the sound of screeching tires and the roar of an accelerating monster truck echoed between the grandstands as it raced down the jet-black drag strip filling the air slowly with the smell of rubber and gasoline. Two smoke grenades are rolled down the track pinging against...