The following NASCAR national series were held in 2005: 2005 NASCAR Nextel Cup Series - The top racing series in NASCAR. 2005 NASCAR Busch Series - The second-highest racing series in NASCAR. 2005 NASCAR Craftsman Truck Series - The third-highest racing series in NASCAR. Preceded by2004 in NASCAR NASCAR seasons 2005 Succeeded by2006 in NASCAR Wikiwand - on Seamless Wikipedia browsing. On steroids.