http://www.assemblymag.com/articles/...al-perspective
"One of the most unique aspects of the assembly building was a 90-degree bend that occurred when aircraft where two-thirds of the way down the line. Supposedly, the length of the assembly line was miscalculated by the architects during the initial design work. The bend was necessary to prevent the plant from extending into the next county where the taxes were higher. A turntable allowed aircraft to be turned 90 degrees and continue to the final assembly stations. The mile-long assembly line had 28 different stations."