Riding Shotgun is a particular side mission in GTA Chinatown wars that is similar to rampages. There are several Cavalcade FXT vehicles parked all over Liberty City. When you enter these vehicles a triad member will accompany you on the van park and shoot at a number of gang cars, most in particular the gang leader's truck. The side mission is similar to the Zhou Ming mission "Driven to Destruction." As with all side missions the riding shotgun is necessary to achieve 100% completion.