Hi Bobby,
Yes they do have a park mode although I suggest you have it hardwired to prevent battery run-down. At the moment, Blackvue are giving you the gizzmo to prevent this free so if your battery should drop below a certain level, the cam will switch off. The park mode is activated by movement, you can set when it switches on. The wifi model is handy for quick reference and stops the farfing about of having to remove the sim and put it in your laptop. The pic quality is very good. Hope this helps.