Consider using the following essential oils to quell the corresponding ailments you may experience while driving:

Road rage: Frankincense. Rosewood. Pine. Ylang Ylang . …

Drowsiness: Peppermint. Eucalyptus. Rosemary. Any citrus. …

Car sickness: Ginger. Orange. Peppermint. Cardamom.

Lack of focus: Cinnamon. Bergamot. Lemon.

NOTE:  A lot of this probably needs to be adjusted because the USB doesn’t have a lot of this stuff.