PAATH

PAATH sends an Android Auto session from your Android phone to a web browser on another screen, over your phone's own Wi-Fi hotspot.

It was built primarily for Tesla vehicles, which have a capable built-in web browser but no native Android Auto. It also works with any car or second screen that has a modern browser with hardware accelerated video.

How it works:
Your phone runs the Android Auto session and streams the picture, sound, and touch input to the car's browser.
The car connects to your phone over the phone's hotspot, so there is no extra hardware and no cloud service involved.
PAATH uses Android's VpnService for one local purpose: it gives your phone an address that the car's browser can reach. It is not a VPN: it routes none of your traffic and sends nothing off your phone.

Requirements:
Android 10 or newer.
The Android Auto app, with its developer setting "Start head unit server" turned on. PAATH shows you how.
A Wi-Fi hotspot on your phone.
A car or second screen with a modern web browser (designed and tested for the Tesla browser).

Optional:
Pair your car so PAATH starts when you get in. Turn on "Stop when I leave the car" and it also stops when you leave.
With the separate Shizuku app, PAATH can also turn your hotspot on when the car connects, and off again when you leave if "Stop when I leave the car" is on.

Privacy:
Nothing you do in PAATH leaves your phone.
The stream stays on the local link between your phone and the browser.
PAATH does not collect or upload your personal data.

PAATH is free. If you find it useful, there is an optional donation link inside the app.

PAATH is an independent project and is not affiliated with, endorsed by, or sponsored by Google or Tesla. Android Auto is a trademark of Google LLC. Tesla is a trademark of Tesla, Inc.