Simply put, due to a very complicated turn of events and legal actions, we don't have an official category for 2010 "Saleen" vehicles except those that are designed and built by Steve Saleen's SMS Supercars, and you can find that forum here:
http://saleenforums.soec.org/forumdisplay.php?f=94
Should you want to discuss other 2010 models on this forum, be they Roush or whatever brand, The SOEC Lobby would probably be the most appropriate place.
I'm sorry I can't really discuss this more because it is a complicated legal matter.
Thank you for your understanding.