Update:
I went to check out the car yesterday. It looked great, except the rear window had fallen out! It looked like the window was just glued to the convertible top, and the adhesive had given out from the Houston heat. Nice work, Carmax. Good luck selling this fir $18k.
Has anyone else had this issue with a convertible? It's a bit disturbing that the glass could detach so easily.
So I wasn't able to test-drive the car, but I drove a gray SRT6, which was nice--but I prefer a manual transmission.