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Not really set on wireless, the wired option looks good too, our wheels need a couple more turns than the racing cars but it should be fine.
If using wireless I would use something like an ESP32 with Zigbee for ultra low power and just put items that are not mission critical like the cruise...
I also wanted to go with buttons on the wheel. Looks like VIP Wheels has some options that could work but I'm still trying to get an answer from VIP Wheels,
So far a quick option is to get a Modular Hub/ Steering wheel from Steering Creations:
HUB...