If you're recording video in a moving vehicle perhaps using a mobile phone like a Galaxy S3 or Note mounted to the windshield would be a better choice?
The GC would be difficult to mount on the dash board and operate the zoom. Plus when you zoom to a longer focal length the video quality would deteriorate even more due to the magnified motion vibrations.
Even on my Galaxy Note the vedeo is fine when it's shot at X1 but when I pinched zoom to a higher magnification the vibrations caused the video to be very poor.
In Smart mode you can activate Continuous mode.
Then you take a shot and hold the shutter release button down until the camera finish the sequence.
It takes 20 shots in this mode but in a few secs not one.
I test shot a flat round object placed on my dining table in room light and it took the 20 shots and all came out sharp without motion blur even though hand held.
But if you're shooting in a moving vehicle I'm not sure about motion blur.