Why not add a fancy digital display? This hack from [Greg Matthews] does just that, using a Raspberry Pi, a OBD-II Consult reader and an LCD screen to create a digital dash that can run ...

[Luuk] is running Android Auto on the Raspberry Pi ... lets it bring up the screen to show the video feed from the newly installed backup camera in the event that the Pi hadn’t already asked ...

A Raspberry Pi custom build can be as simple or advanced ... Are you trying to run an LCD screen or a hard drive directly off your Pi? A SATA SSD alone can consume around 8W when active.