Bristol "tops off" support towers for Colossus: The fourth and final structural tower that will support Colossus, the world's largest outdoor, center-hung 4-sided screen, was "topped off" Thursday with the raising of an American flag. In addition, the scoring pylon in the infield has been removed. The next phase of the colossal undertaking is to install the cables that support Colossus TV as well as the state-of-the-art, 540,000-watt audio system powering 380 3-way loudspeakers and 48 stadium subwoofers - enough to make any rock star squirm with envy. The team at Bristol Motor Speedway has put together two timelapses that give a view of the removal of the scoring pylon and the building of one of the four towers.
