Vehicles interiors

[Indy]

Hi, I have an other one problem. I'm making interiors for a truck but when I put them in to opf I can see them only sometimes when i'm near the truck.
What I must do?
http://www.stcracing.com/Intsc1.jpg

[PSC]

Same question already appeared in this topic. Maybe the solution there helps you as well:

Invisible through window! (http://www.flashpoint1985.com/cgi-bin/ikonboard301/ikonboard.cgi?act=ST;f=38;t=11105)

PSC