The solid quarter put in by CarMax bodes well for auto-related firms such as America's Car-Mart...

The solid quarter put in by CarMax bodes well for auto-related firms such as America's Car-Mart (CRMT -1.7%), AutoNation (AN), and Sonic Automotive (SAH -0.6%), according to analysts. Many of those predictions on the increased demand for replacement autos due to the aging U.S. fleet are coming to fruition as both the new and used market for cars shows some vitality.