The very first step of drawing a vector style car is to create its lineart. Creating lineart is basically the process of drawing guidelines for your piece to help you identify the various areas of its colors. This process is very important to give your flow of work a comic look. In this tutorial we are going to draw the lineart of this Mclaren F1 using paths. You are required to have some experience in using Photoshop's Pen tool to be able to draw this car in detail.

LINK:
http://www.oman3d.com/tutorials/photoshop/drawing_lineart/