OK. I’m confused. I am of the understanding that Bluetooth just let’s you play your phone or answer your phone calls without having to use the phone and just answer calls from a button you push on your steering wheel. Your phone does not need WiFi for talking but to download your files even from Bluetooth you need WiFi.
I was told that in order to listen to Music on your tablet, you either need WiFi or an Android Pad that has a “Built In Modem”.
I tried the phone, to listen to for example Pandora, you need a continuous WiFi which if you are driving, you lose your signal off and on.
I found this site that has a program to connect your Android Pad to your car.