Well from my experience up to now you have to take care of 3 aspects.
1.Make sure settings are set to standard (640x480) and not compact.
2.Keep camera as steady as possible.
3.Good lighting conditions help a lot.
Try it out and you might get even better videos than this one. (I have)
I strapped a small tripod on passengers front grip handle with a velcro , and then mounted the camera on the tripod. Next thing I will try is to use sime kind of damper (rubber , afrolex etc).