Hi there

Here are my render settings

HDRi I was used Helipad Afternoon from this sIBL

http://www.hdrlabs.com/sibl/archive.html

If Poser 11 is crashing,please turn off Branched Path tracing if you do render with GPU

Still is not the best render,this car is pretty low poly and on this car I think I would benefit from subdivision

Hope this helps

Thanks,Jura