[EricH]

And to agree with Dave, the GDC has issued the following Q&A: http://forums.usfirst.org/showthread.php?t=11644 which reads in part:

Originally Posted by Q&A

C: Every exterior corner of the BUMPER PERIMETER must be protected by BUMPERS (Rule <R08-I>). Each segment of the BUMPERS protecting an exterior corner must be a minimum of six inches in length (Rule <R08-A>). The Trailer Hitch must be attached along the BUMPER PERIMETER (Rule <R18-D>), so it cannot be mounted to the BUMPERS. These three rules, taken together, would mean that there can not be corners of the BUMPER PERIMETER immediately adjacent to the ends of the Trailer Hitch.

Please refer to this post from Bill's Blog for advice about determining bumper legality.

If it isn't clear by now, then it will never be. The "robot" pictured is not legal to compete.