'a-lone-wolf' made very interesting revelation. For the first, he found 3D model of composite bicycle and biker in Resistance. More his words -
Offcourse, bicycle is inactive and perhaps it's textures was deleted before releasing OFP:R, because they aren't in o.pbo (here is destined filepath of textures in P3D file).
Second thing what he founded is difference between czech and english version of OFP:R. In czech version, there are 2 pbo files.
First is "cl.pbo" (15MB), which include several 3D models of 4 buldings (in variety of stages of develop). One P3D file is even in MLOD format! But in mission editor only two of this buildings are visible. Now what is very interesting, names of this objects are "VBSchurch" and "VBSobjekt11"!!

Second file is "prim.pbo" (43kB). This is uninteresting file which include 3D objects like sphere, spire, cube etc. All in ODOL format.

Thanks to
'a-lone-wolf' for this investigation :)
PS: I asked BIS, if we can give cl.pbo for download, but we can't. So please, don't ask us for this file.