Motown sweep
n.β Β«That move you wrote about today where drivers exit from the left lane has a name. Itβs called “the Motown Sweep.” Iβm not sure who coined the phrase, but I originally heard about it from one of my professors at Wayne State University in the 1980s. He explained that it was most prevalent on I-94 for whatever reason. I think itβs been an epidemic for a long time. By any name itβs pure idiocy.Β» ββReaders rage about idiocy on freeways” by Matt Helms Detroie Free Press (Michigan) Sept. 7, 2006. (source: Double-Tongued Dictionary)