Blurry drive home

[AaronTM]

So last evening I was driving home and decided to take the camera out. I was sitting at a red light. I set it to shutter priority mode on my G9. I then set the shutter speed to 15 seconds. And here is the result (after some tweaking in CS5).

EXIF:
Canon Powershot G9
Shutter speed: 15 sec
Lens aperture F/8
Focal lenght: 7mm
ISO: ISO-80