works great on window of the cars
"i can use it well if i attach it to the window of the car, it doesn't stick to the dashboard of the car, it has to be a good flat surface, which my car's dashboard didnt have. and the material of my dashboard is like plastic but not that glossy kind, the rough texture one. if your dashboard has a good flat surface like 2. 4 inch or 5 cm of diameter. and made from glass like material, it would work amazingly."