Well, after clicking on this link:
http://armor.ag/1I488
You should get into a track where you drive a big truck, if not, search on the User Made tracks, at "Latest" and search one which says "Cop's END. This is Spartaa!" I made it and it's pretty big lols (it's possible it goes a bit slow if you don't have a powerful PC )
Have fun with the rest of stuff there