Primary Outlet: WTOP (Washington DC)Broadcast Date: Tuesday, March 3, 2015 - 12:38pmBroadcast Type: interviewBroadcast Format: radioScholar: O'Toole, RandalSubjects: WMATA’s Purple LineResearch Area: Government and PoliticsLink: http://www.cato.org/multimedia/media-highlights-radio/randal-otoole-discusses-wm…