I doubt Dan will say, but I am hoping for the Scrap-Weiler Concept! <img src="/ubbthreads/images/graemlins/crossfingers.gif" alt="" /> :
The SS-3.5 concept based on the Busse Active Duty with mudders like the SS4 would be second on my list:
<img src="/ubbthreads/images/graemlins/thumbup.gif" alt="" />
...... oh... you said "when" <img src="/ubbthreads/images/graemlins/blush.gif" alt="" />
.