XeNTaX

This game have quality models of the Russian car industry, and not only.

Each model is archived *.grp

Is it possible to open it?

All car models:
https://www.mediafire.com/file/05ikrno2 ... C_cars.rar

well, I'm too late again to the party, but since the cherokee.grp contains uncompressed 3D data here the result:
.