You are right.  Just checked and Andriod Auto is not officially listed for Thai Spec RS model.  Thai made Civic RS for Australian market supports Andriod Auto.  I think it's because Google has not released Andriod Auto for Thailand and Malaysian markets yet.  Just tried downloading it and it says the app is not available for our country.  Bummer!

List of Apple Car Play countries:

Apple CarPlay: Apple CarPlay
https://www.apple.com/ios/feature-availabil...ay-applecarplay
Australia Austria Belgium Brazil4 Canada China Denmark Finland France Germany Hong Kong India4 Israel Italy Japan Malaysia Mexico Netherlands New Zealand Norway Republic of Korea Russia Saudi Arabia4 Singapore Spain Sweden Switzerland Taiwan Thailand4 Turkey United Arab Emirates4 UK USA
List of Andriod Auto countries:
https://www.android.com/auto/
The Android Auto app is currently available in the following countries:
Argentina Australia Austria Bolivia Brazil Canada Chile Colombia Costa Rica Dominican Republic Ecuador France Germany Guatemala India Ireland Italy Mexico New Zealand Panama Paraguay Peru Puerto Rico Russia Spain Switzerland United Kingdom United States Uruguay Venezuela