Select the rectangle tool to create your front and back windows.
Sketch a side window profile using the line tool.
Select all 4 lines on the side window and click CTRL “C”.
Rotate the vehicle and select the opposite side. Click CTRL “V” to paste the copied window. Move the window copy into place.
Use the line tool to trace the outline of your copy. This will make it a solid object.
Outline of the front and back windows being drawn onto the car.