The eight panels each look like a futuristic airplane, and work together, almost like a...

The eight panels each look like a futuristic airplane, and work together, almost like a camera shutte to open or close the roof. [narrator] The eight petals almost the size of a city block, cantilever out 200 feet over an oval opening. Each pedal is attached to the stadium with two sets of tracks in parallel. The outside uplift rails are gripped with wheels, like a rollercoaster. Preventing the 450 ton petals from tipping. The inner track provides the power to move the petals back and forth with eight wheel driven systems called bogeys opening and closing like a giant eye. [Brendan] But it's an optical illusion In reality, the individual
petals move in a straight line
along their own tracks