RE: 1,500 Challengers
Vehix has a few more listed nationwide- 1,641. See:
http://www.vehix.com/inventory/Search.aspx?Limit=10&N=126%2B4294967211%2B42949086 52&Nf=pLocation%7CGCLT%2039.8512001037598%2C-75.0725021362305%2056.327145&Ns=pPriorityLevel%7C1 %7C%7CHas%20Price%7C1%7C%7CpLocation(39.8512001037 598%2C-75.0725021362305)%7C0&PostalCode=08078&RadiusInMil es=24873.6309353221