Pro,I believe you will only find Trek vehicles in the US as it is a LRNA sponsored event. The 2008 Trek event information is out and available to the dealers at www.landrovertrekna.com . Mr. Burns is organizing this event as well. You may want to click on the video in the web site and watch all 4 segments of the 2003 event. Besides the obstacle encountered (which were some of the most expensive obstacles I have seen created for a limited use course) you will get to hear information regarding the previous event in 1999 and who participated and won.
I know the team from Land Rover Naperville (in IL) had a Trek rig at their dealership for many months in 2003 and it would not sell. The $56k price tag did not help either. They ended up taking a dealer trade and their Trek vehicle moved to Nashville, TN where it was sold.
Regards,
Dan