CarDisplay.

This is a box for 2 x MAX7219 Dot Matrix Module 4-in-1 Display For Arduino
From banggood https://eu.banggood.com/Wholesale-Warehouse-MAX7219-Dot-Matrix-Module-4-in-1-Display-For-Arduino-wp-Eu-1072083.html

Its is a 2 part box for the display, and a box for eletronic and a battery.
It has room for the battery and a esp8266 from LOLIN.
The only thing you need to design is a stand / mount for your car or where you want to mount it.