I just checked it out - quite impressed with the some of the models you have in there - looks great!
Admittedly I've never played CNR, hence my knowledge-base is severely limited with respect to what constitutes a "good" CNR track. I recall reading an instruction page on the old LAPD site when they were up and running, but I was so new to the game, (1.) it didn't make a whole lot of sense to me, and (2.) well...I just didn't care! Hehehe I do know it's Cops N' Robbers, and chasing and catching is involved, but that's about it.
After a quick survey of the track I did note several models that need to be set to no-collide, then fitted with object boxes that follow the models's shape. Hehe I don't know jack about making tracks...but after hanging out with guys like Phin, Mal and the five track makers we have on SLO, you pick up bits and pieces of info/technical jargon.
I'll tell ya what...I know several ppl who like beta testing (including myself), so I'll be sure to pass the link you provided along to them and get you some feedback. From your end, I would greatly appreciate a little more info about CNRs...or point me in a direction where I can read it for myself. I have no clue what elements are considered "good" and/or "bad" where CNRs are concerned. I'm about to learn a little bit more on my own, however; I'm assisting Phineus with track settings for his page, and I have quite a few CNRs to check out, but that kind of familiarization will only take me so far.
Ok I'm done. I have a tendency to uh...well, talk a lot, so I think I'll stop here and wait for your reply!