Charlotte Motor Speedway Tuesday announced it's adding a new giant video board to help fans see more during races. The speedway says the screen amounts to the world's largest HD television. The display will measure 200-ft. across and 80-ft. high. It'll weigh more than 80 tons, be built on the back straightaway. . . and be secured to withstand hurricane-force winds. The Panasonic-brand screen will include more than 9 million lights. NASCAR tracks have struggled in recent years with declining attendance. Track owner Bruton Smith says he's confident the new video screen will lead to sell outs of all NASCAR events at the track next year. "This is a giant step for NASCAR and what we do, and all the other things that we're going to be doing here," Smith said. "This will enable us to do a lot of things. Charlotte Motor Speedway is going to get very busy as a result of this." Construction is scheduled to begin in October. It'll take at least four months to finish. The track did not disclose the price of the screen.