Android Auto and SIM Cards

Hello. I'm looking into getting an Android Auto device to hook up to my cars on-board HUD and Navigation system. The "box" contains a slot for a 4G sim card. Can I just order a new sim card and attach to to my phones unlimited plan and just use the data from my plan for this new device?

I understand the sim card would contain my account information, etc and be able to use the data from my account. Just not sure how it all works, etc when I get the new sim card and if there are any issues doing this without opening a new line.


Glen Collins