As was stated earlier in another thread, maybe even this one....
They wre driving those jeeps around, TRYING to break them. That way they can see just how much trashing they can take. If that really was poison spider, then I can imagine they want to see how much their mods can take as well.
Interstingly enough, the first time I saw these pics, they did NOT have the Poison logo stamped on them, and the poster said that is was the Chrysler guys that showed up at some organized trail ride or something. There were also pictures of the same JK's on forested trails and what not.
Makes me doubt the validity of the claim that these are Poison spider guys.