I'll suggest using cars.com and autotrader.com for retail searches, and try searchtempest.com for a mass Craigslist search. It let's you search all Craigslists within a specified distance from you.
Mine: 2008 Saab 9-3 Aero SportCombi XWD: 82k, Black, MANUAL
Gone: 2002 SVT, #1654
Hers: 2010 Focus SES: 70k, Ebony, Auto, Moon and Tune