Now you can delight yourself with pleasant scents of essential oils and their beneficial effects on the body, being in the car and not at home. Mint-to raise awareness activity when the one behind the wheel. Eucalyptus unloads-breathing during the approach to the ozone layer. Mandarin for better recall when daydreaming while driving. Lemongras- relieve tension, if you are standing in a traffic jam. Patchouli, for better conversation at the time of the long trip. Ylang-ylang to create a better perception on the first date. The unit should be withdrawn if the red button stays on with the engine off.