Looking through windshields in vehicles

[Brass 0]

with most road vehicles, if 1 is parked in front of another non-geographical object (ie present in default map). eg park a car in front of truck.

if you look through the windshield of the car, you see straight through the truck and see the background trees and hills, but the truck is still there!

i dunno if this is a video card problem, but i doubt it. ive got the latest certified detonator drivers, and my card is riva tnt 2 32mb 64, 1ghz processor, 385mb ram. running in 32-bit mode too.

any feedback?