Google aggressively patches exploits every 6-8 weeks. The developers of CarStream work in a "cat and mouse" cycle. However, version 206 introduced a server-side script updater. This means the app can now fix broken YouTube links without you needing to download a new APK.
: In the Android Auto settings on your phone, tap the "Version" section 10 times to unlock Developer Settings. Allow Unknown Sources carstream 206 apk
Here is the critical caveat for version 206: Google aggressively patches exploits every 6-8 weeks