Select the Arc tool and draw an Arc on the square, about halfway up.

After you have extruded the shape, and then using the Eraser tool, Delete the bottom front line and you should now have something like in the picture. As a side note, remember that the white side of the Faces always need to be visible to the Camera, it is mostly important when you want to render your model. To reverse the Faces, Context Click>Reverse Faces.

In this step you need to use the Line tool and connect the two Wheel Wells. You could make the Line more complex by adding curves with the Arc tool, but for simplicity’s sake you are going to use a simple Line.

Now select the Arc tool, press the Tab button on your keyboard, then Type in 3, you will then see this number displayed in the Measurements Box in the bottom right hand corner of your screen. What you have typed represents the number of segments of the Arc. You could have left the default 12 segments, but it will be easier to Edit later.

Now select the Follow Me tool and clicking on the rounded shape you made in the previous step. Drag it along the curvature of the Well and along the Line you have previously drawn, resulting in a smooth side, like the one in the picture.

Select the entire body panel with the Wheel Wells, then Context Click>Make Component. Making it a Component will make it much easier for modeling a bit later.

For this step select the copied side panel and select the Scale tool. Now Click on the side Middle Points like in the picture and Drag to the left, until you see -1.00 in the Measurements Box. That means it has been inverted but has the same dimensions before scaling.

Now draw at the front whatever shape you want, but in the model here an Arc and a small Line was used.

Copy the Line along all the edges of the side. If you used just a few lines to make the contour, you can just stitch the Faces by hand using the Line tool. If you used many lines, this is where the fact that they are welded comes in handy. Selecting only two Lines at a time you can make the Faces automatically using the Skin Plug-In (you should try more than one version of the Skin Plug-In, as not all work very well).

Select the Rectangle tool to create a vertical rectangle, then using the Line tool draw whatever shape you think fits best, just do not make it too complex.

After shaping the cockpit to improve it’s look and make it more realistic looking, you need to slant it. You do this by selecting the Rotate tool. Align it with the Red or Green Axis depending on how you positioned your model, press and hold the SHIFT button on your keyboard to lock the Rotate tool on that Axis then click on the middle of the bottom line of the cockpit, then the second click goes vertically on the Blue Axis hitting the upper line of the cockpit.
You then have to Rotate a bit till it has the desired effect and angle.

I know it is not very pretty, but if you managed to follow this tutorial so far, chances are that with a little practice and learning how to use some Plug-Ins you can model a really cool car.

End of this tutorial.