40 teams listed at end of
http://www.darpa.mil/grandchallenge/NQE_Press_Release.pdf

"DARPA selected the semifinalists from a field of 118 entrants, using
results from on-site visits conducted by DARPA technical staff last
month. During the site visits, DARPA thoroughly evaluated the
capability of each team's vehicle to autonomously navigate a narrow
200-meter course that contained turns and randomly placed obstacles."

Many of the suspects will be recognized from last year and previous
postings.

/dps