You don't even need an air freshener in the car. On a Friday night you could very well get pulled over because "your tail-lights weren't on" e.g. the cop is fishing for a DUI even though you were driving fine. When you turn out not to be drunk, the cop writes you a ticket but don't worry, all you have to do is show up at traffic court to get it cleared! Never mind that the car's light switch was set to "auto" the whole time and if the headlights were on, the taillights were also on...