

Depends what you want to do. They don’t require a network connection to operate as a vehicle. So if you don’t care about the remote app features (local ones such as lock/unlock still work over BLE), live traffic, streaming music or updates, then a network connection isn’t necessary.
If you do want any of those features, then you would need to either get root access to the gateway and infotainment systems to modify the endpoints or take over the C&C server (formerly named “mothership”) domains and certificates.
What was going on in the background during the last 10 seconds of the video? You hear a bang, then someone repeating “Watch your legs officers!”.