The first design. I was really inexperienced at 3D and Rendering. After I finish this render i stopped for about 5 months with this project.
This was rendered with Blender Render.

Then I decided to restart and put my new skill at test. I then switched to Cycles Render and started to add details to the car and to make some changes with the overall design.

Got some inspiration from Formula One. Finally had a good design to work with, but the car was just too simple.

Added more details, better materials, lights, custom textures. Until this point all process took me about 7 months.
I've learned more with this project than with any other. Before that I had no experience modeling cars or even rendering using Cycles.

And finally the final renders after adjusting everything.
1 year of my spare time.