Make the cuts shown in green. You can use the "Connect" tool to speed things up if you like.
Create the polys shown in green. When you have done this, select the edges shown in green and use the "Connect" tool with 1 segment to split the polys.
Weld the vertices shown in the green circles and then create the red polys.
Select the green edges and chamfer them by 0.1 and then cut in the edge shown in light blue.
Next we will create the tank that is found under the hood of car. Create a box with 3 length segs, 8 width segs and 3 height segs. Convert it to polys and delete the polygons shown.
