[This review was collected as part of a promotion.] The Pura Car works reliably well. I would say the scent throw at the highest setting varies depending on the scent you use. Some are stronger than others. I'm picky about scents, but if you know what base notes you like, it's easy to find ones that smell sophisticated and nice. I have the motion sensor turned off to save scent. If you keep motion sensing on, the device will run every time the car is in motion. This can drain your cartridge fairly quickly. I would also charge your device frequently so that the scent throw stays as strong as it can be. It doesn't take terribly long for the battery to drain, and once the battery is low the scent throw wears off.