Good question. The value of connection through the wifi network is cost. The snag with mobile connectivity is that it is not free. The eSIM embedded in the vehicle, connected to the Verizon?? network costs VW about 0.50 per month I'd guess from experience. The data charge is on top of that. I'd guess, VW is looking at $2/month for the service, probably less. Now, the plus of mobile connectivity is that it is now pretty reliable, high 90s nowadays where you have a signal. The question I have is, how long is VW going to pay for the mobile service? They give CarNet free for 60 months, so that is my guess. What then? The car has a service life of 15 years. Are they expecting ppl to pay 20/m after the free period expires? No gonna happen for most. So, the value of wifi is, it ensures connectivity without any metering (of data or connectivity charges). The downside is, it is more troublesome to set up, also your phone will need to be on the same network as your car. Think of printers at home and how difficult they are to maintain, especially if you have multiple routers and wired options.