A complete breakdown of organization may result in traffic congestion and gridlock. The progress of the legalization bill was slowed by legislative gridlock. Traffic gridlock and other contention near the downtown venue were legitimate concerns. Traffic gridlock in Delhi and other Indian cities is extreme. The result caused instant gridlock on Karachi's streets. Gridlock on Interstate 10 out of Jacksonville hampered evacuation efforts. The growing number of cars tend to cause gridlock and contribute to air pollution. The outgoing 19th National Assembly was marked by political gridlock. At times, the crowd flooded the street creating gridlock. First & Goal's facility lease agreement also included a provision to ease gridlock. Anti-roamers and area-denial operators such as Gridlock, Dokkaebi, Nomad, and Lion can counter her. Production of "Gridlock" took place in September and October 2006. In 2007, she appeared in the "Doctor Who" episode "Gridlock", guest starring as Cheen.