Someone in the family prone to motion sickness? If it's a child older than six, give a preventive such as Dramamine, about an hour before traveling. “It makes most kids drowsy for several hours so you need to plan accordingly,” says Gardner. It also helps to stop frequently and take a short walk; keep the vehicle well-ventilated; and have kids look in the distance outside the car (that means no reading or texting). If you’re the one who gets nauseated, follow the same rules.