This kind soul has made many detailed 3d vehicle models available in LightWave format.
http://www.dmi3d.com/
You will probably need AC3D v6 to load these using the new LightWave importer.
I post this link primarily because it may offer a good study in vehicle modeling for those interested in that endeavor.
The ones I checked out seem to be freely available for non-commericial purposes.