I have published FSO Żerań track for free offline testing. Removed obstacles from roads, also driveline, pacenotes etc. So, you can test your car setups or just enjoy driving on all the area, similar to RBR Rally School plaza :)
Here are the download links:
http://e-rajdy.pl/zasoby/FSO-Zeran-FreeRun.7z (please use other link for a while)
https://www.sendspace.com/file/mg5jg0 - updated version, fixed minor bug, changed coble physics.
Note: manual installation only.