Air fresheners are popular items and are great for giving your vehicle that new car smell. Unfortunately, they don't last very long and tend to lose their scents after a short time. Next time that happens pour a few drops of essential oil onto your old freshener instead of buying a new one. It will restore it in no time, and you can even control exactly how you want it to smell.
The best part about essential oils is that you can mix so many different scents to create an even greater one. Your future passengers will certainly be impressed with your great-smelling car.