Mowasalat to launch 250 new Karwa buses in Doha November 14, 2011 | Middle East & Africa News Mowasalat plans to launch 250 new Karwa buses for the Pan-Arab Games to be held in Doha in December 2011. The new buses utilise features of the 3G bus operation system (G-BOS System) which is based on... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password