Really needs auto-shut-off!
I tested this at home for a while and it was great.  A barely noticeable reduction in dust, but that's to be expected for its size.  Temperature being locked to Celsius was annoying but not that big of a deal considering I didn't need the feature.<br /><br />Moving it to my car, however, proved just how powerful it was!  I turned it on after getting fast food on a long trip, and half an hour later I could feel my hair standing on end from ambient static!  I could also start to smell ozone, which isn't really a good thing considering it's generally not that healthy for you to breathe.  I unplugged it and cracked my windows for the rest of the drive, but it took a good while to dissipate.<br /><br />I would be careful using this, especially for long periods of time.  It does its job too well!
Rating: 3 stars