I'm more automotive designer then 3d modeling real objects and vehicles,so sometimes I had to give myself a fuel for my creative side.Here is my older supercar concept created without image references.I just followed my mind and created shapes until I was pleased with nice proportions.
Model was created with blender3d 2.69 modeling software.Main rendering preview image was created with Simlab Composer rendering software,others with studio lighting settings with cycles rendering software in blender3d.Objects have been named by objects and by materials,and have been detached.There are no interior objects and no textures nedded for this product.Model was exported with subdivision 1,until my renderings were created with subdivision 2,so you can use sub-d,as you like.I hope you like it my concept.Enjoy my product.
I checked collada file with online webgl viewer.
obj filechecked with GLC player
verts:91416
polys:174732