NEW YORK – JUNE 23: A man waits near a taxi cab stand on June 23, 2009 in New York City. A Manhattan federal judge halted Monday New York’s latest attempt to force yellow taxis to go green by using fuel-efficient hybrids. The Metropolitan Taxicab Board of Trade successfully argued that requiring cabbies to drive hybrids would force owners to replace their current fleets with eco-friendly cars and illegally preempt federal emissions laws. (Photo by Spencer Platt/Getty Images)