the NXT remote is a really neat thing, i don't tend to build fully autonomnous robots anymore because of it. cool concept, i've tried this kind of thing before, but it never really works for me. Also, check out some of my NXT creations, they may give you some ideas.

The vehicle is remotely operated with Anders Soborg's bluetooth vehicle remote. I know that this essentially means it's no longer a robot, but I'm fond of the flexibility that remote control gives me. Also, employing sensors would make it difficult for the articulated concept to have any purpose; an unmanned vehicle built with NXT would be very difficult to program, if not impossible, to know when to climb over objects or when it's losing traction. Thanks for the comment!

Ya, the concept is unbeatable, but I see that you don't have any sensors hooked up to that thing. What's up with that?