Visiting Memphis in late July 2010 found these buses in reserve. Thanks to James Roach-Willman we have been able to identify them as Champion Solo buses bought in the 2000 to 2002 period, but were not a resounding success and hence their premature reirement.
Newest buses in service were hybrid Gillig Advantage models, like 4003, one of five similar 40ft buses, seen at the MATA North End Terminal in the city.
The first hybrid buses for MATA were four shorter 29ft Gillig Advantage models, of which 2004 was the last. The bus is seen returning to the depot after use on MATA's paratransit on demand service, MATAplus.
Hybrid 4003 is seen again on the 8 Loop service.