Well... yes. It requires *some* kind of internet access... cellular WAN would be the natural choice for connectivity.
I have a mobile wifi access point in my vehicle, but the internet connectivity comes over a cellular connection.
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The blackvue does not connect to the cellular network directly. You can't put a SIM card in your blackvue and add it to your Verizon plan. You need some kind of cellular-capable wireless router to act as the middle-man. The blackvue would connect to the wifi router, and the router would connect to the cell network. Something as simple as a MyFi, or Verizon Jetpack would work fine. Alternatively, something like a Cradlepoint router (which takes a USB cellular dongle) could be used.