Raspberry PI Automotive cd/dvd player insert

I made this to replace a dvd player in the back of a conversion van. It will fit a normal cd/dvd player opening.
There is a place to mount the PI and a volume controller with room to spare. Simple thing, easy print.
Edit: Added a mounting point for a buck converter. I wanted to run the wires behind everything and wire directly into the 12v van wiring. I soldered a usb plug to the buck converter to plug directly in.
I also added the step file, please feel free to improve my design. It would be awesome if you let me know how you improve it. I am thinking of adding an on/off switch and led.

Comments with ideas would be great