There are 2 repositories under openauto topic.
Crankshaft: A turnkey GNU/Linux solution that transforms a Raspberry Pi to an Android Auto head unit.
Android Auto Server encapsulates communication with modern car infotainment system
OpenAuto Pro API
Android app that will sync time and temperature with OpenAuto Pro installed on Raspberry Pi
My custom Image with Open Auto pre-compiled for a raspberry pi 3. this allows you to have a sudo plug and play experience with running android auto on a raspberry pi.
OpenAuto Pro API development for AUDI to use CAN bus communication over PiCAN2 interface for RaspberryPi