This one is in the works. So most of the info are in the works.
Getting precise info on car electronics has been challenging. The idea is to tap into CAN bus for a few real time readings and handling everything else with external sensors.
Custom Automotive grade voltage regulators and point-to-point wireless board.
I have a (now discontinued) Joule board to run the Python scripts.
Also have a leftover DAQ from one of my earlier projects.
Babysteps: Custom battery harness.
More info to be added...