The rear ender is just like the front one with a little bit of tweaking so instead of making it from scratch, we can mirror it to the back of the car. Select Tools->Mirror from the menu. The window shown will open. The settings shown are the ones that worked for me but you will most likely need to experiment to see what works for you. Make sure you select "Copy" from the "Clone Selection:" box.
Now just move vertices around to make the fender fit around the back of the car. I won't go though it step by step because it should be easy for you by now.
Let's make the trim for the side of the car. Earlier on we put a groove in the side of the car. Now we are going to make the trim that fits in that groove. We are going to do the same thing we did on the fender. Create a box in the side view and extrude it along to fit in the groove. I will not go through When smoothed, it should look like the picture.
There is also some trim that goes along the side of the door. Once again, we are going to use the same process. Create a long, think box along the side of the car from just above the wheel arch to the beginning of the hole in the door. Now just do some vertex adjustment to line it up with the side of the car.