I just ad the Bluetooth convo with a friend and there seems to be this assumption that "most cars that people buy have bluetooth" but it just doesn't stand up very well when you look at what cars offer bluetooth in their base trim.
http://cars.axlegeeks.com/d/f/Bluetooth
yes, there are 11 pages but if you click on say Dodge and filter by 2016 you'll find only 3 high end vehicles with base trim on bluetooth. This means people actually need to choose Bluetooth which sounds crazy to us why they wouldn't but most people have no idea.