You have been cited under § 2.05 of the Public Courtesy Code: Audible Media Without Headphones
NOBODY WANTS TO HEAR IT.
Your video, your call, your playlist — out loud, on speaker, for the whole car. This is not a shared experience. Nobody asked for the content. Headphones cost less than what you are costing everyone right now.
This is not a fine. There is no fine. Think about what you did.