@jokiin would be the one to answer this, but I wonder how your car battery would hold up recording for that long?
Rick, maybe you can answer this question - will you be building in any functionality so that if your car is parked for 6 hours and someone knocks into it at some point during that 6 hours, instead of having to sift through potentially hours worth of timelapse footage, when the g-sensor recognises the hit it will lock that file and put it in another folder? Does it do that already? I fortunately have not had the opportunity to test that!