That's not how any car I know of works. Infotainment stuff can't go on the CAN bus due to bandwidth limitations. It's usually on its own network. Historically t

That's not how any car I know of works. Infotainment stuff can't go on the CAN bus due to bandwidth limitations. It's usually on its own network. Historically that was MOST, now it's usually Ethernet (or A2B for some specific components). That network may be bridged to other networks like CAN with a locked down gateway module, but frankly even that design is out of style due to security issues. If you know a manufacturer putting radio devices on the CAN bus, by all means name and shame. I'd be morbidly curious because of how obviously terrible an idea that is.