The concept's neon tailights are out.
The 2008 production model will have tailights similar to those on a 1970 Challenger with a white back-up light in the middle.
redletterdodge.com had a small "spy" photo of the tailight. See:
http://www.redletterdodge.com/2007/1...allenger-srt8/
(Click on the thumb-nail photo in the upper right to enlarge it).