Built from separate parts. The model is grouped into major parts such as body, wheels, doors etc. The files are zipped( to decrease the size) includes all the materials files that were used to render the car.
Rendered in Vray 1.5 sp2.

Specs
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Polys : 510626
Verts : 433382

Features
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# Modifier panel heirarchy preserved

# Accurate model to match the actual dimensions of the car

# Can be edited according to need

# Materials included

# Scene setup included

# Very detailed

# Detailed Close ups of wireframe provided

# Scene delivery includes many formats (OBJ, MAX(2009), 3ds 2009)

# Can be used to study modeling procedure

# Files for download are in .rar format to decrease thesize

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Contact if you have questions. I also offer custom 3d modeling / rendering services.