I have a blackvue fitted in my van, it does everything you want and stuff you wouldn't think of. It has a sensor that monitor the state of the van battery and turns its self off if it detects the battery power is low, it automatically uploads to a cloud when it detect a known wifi hotspot, I'm now sat eating breakfast in a premier Inn I can look on my iPad and see the live image it is now recording. If it was in a work van I could monitor my workers movements and follow on google maps the exact route it took.
Like most good dash cams it record in HD but the quality is superb.
It cost £400 fitted.