When checking today something I wanted to see (as I supposed that my K2 was recording everything and just deleting "older" files in the 125Gb SD card that is installed), I've realized that a period of time when I've been riding today is missing... How this can be possible? There are video files from previous time and days and later... but there is a "hole" in a period of time in which I've been riding my bike.
I've also realized that there are 2 folders. One is called "VIDEO" (in which I presume are all the "normal" videos that the K2 is recording) and other is called "PARK" (in which I presume are the videos "triggered" by the park mode). But in the "PARK" folder are also many videos that have been recorded when riding the bike (I've been riding 10 hours per day this weekend).
If in addition to the lack of quality of the videos (far away of what is shown in the "expo" videos and photos), I cannot trust in what is recorded and when, I will consider that the K2 is just a new piece of hardware&software not working as expected and a (new) waste of money.