This is a great way to keep the dust off your car.  When I lived in Arizona, the dust was just awful.  I lived out in the country and my car always seemed to get caked with dust minutes after I washed it.  The CA duster did an awesome job of minimizing my trips to the car wash back then.  Things here in Califas aren't as bad as Arizona, but this duster keeps my cars looking car wash clean between washes.  I highly recommend it.  Plus, it's super gentle on the paint.