Hi,

I have a pixel 7 on gos and my pixel 6 has still android google on it, dont have the sim card anymore i it but do you think I can use that device to use android auto?
thanks

GrapheneOS does not support Android Auto. Stock Android OS does support Android Auto and also does not require a SIM card. However, if you're going to want to use it to navigate/listen to music you will need a way to access those without data (i.e. download maps/songs for offline use, tether to your Pixel 7, etc).