Of course there is a wifi mac address! A mac address is the hardware address of a network card...The 7.5 mib has both a wireless client (connects to carnet using a hotspot on your phone) and a wireless server (allowing occupants to connect to it and share the internet connection of the phone thats connected with the wireless client).
What it doesn't have is the software to make it work - the ACP code on the mib needs updating to a newer one. This sort of enhancement is well beyond VAG's desire to implement. You want some new features on your utterly reprogrammable unix based MIB unit? Yes sir, thats available in the Mk8 Golf, coming soon.
I've said it numerous times before, its like Xbox offering a new game, but only if you buy another xbox to run it on, only a hundred times more expensive.
Its about time car manufacturers actually embraced the world of software. Even getting to last century would be great, let alone dev ops!