That DOD camera look interesting, but there is a few buts i think.
http://dod-tech.us/product/dod-hummer/
It use a 14 mpix sensor for just 1080p footage, so night footage might not be as good as a 1080p sensor with larger pixels.
But that mean the image stabilization it claim to have could work, but "IS" also take a bit off the image quality as i understand it.
For media it say up to 32 Gb in one place.
Another place it say up to 10 hours of 1080p recording on a 64 Gb card, so bitrate cant be in the high end, though its properly not overly low either.
And as it have a screen on it to do the settings i cant really see the use of wifi, unless you want to get footage of the thing while you are out and about, but in that case i would just pop the SD card into my phone and play / share it from there.
Seem to only come with handlebar mount, so this will leave out a lot of bikes with fairings i assume, and also it do look large in the pictures so not stealthy at all.