I have never tried Apple CarPlay before now, so it's a new world for me, and I'm not quite sure how it works regarding data usage. I have connected it wirelessly, and it plays music through the cars speakers, so it works fine. The infotainment system say that it's setup as a hotspot and have 1 user connected, that's my phone. When i then play music using CarPlay from my phone, does it so use data from my phone sim or from the cars esim? And does the esim in the car have unlimited data usage?