OP is heavily downvoted, but yes some ECU are moving to wireless communication although not WiFi.
It started with places where you simply can't have wires, for example tire pressure monitoring. But is now spreading to other simple ECUs. And yes, it can be jammed so obviously it's not for brakes and steering and things like that.
You can image the drivers side door has a module that senses the door switches and operates the drivers window and door locks. And communicates via RF to modules in the other three doors to control the windows and door locks.
Seriously why the heck not?
I've thought in the past what I want for trailer lights is a RF connection between the vehicle and the trailer. It can't be worse than the standard way that always fails.
It started with places where you simply can't have wires, for example tire pressure monitoring. But is now spreading to other simple ECUs. And yes, it can be jammed so obviously it's not for brakes and steering and things like that.