Kia Motor's recommendation? Share the driving, chose the traveling music together and plan plenty of stops. The latter not only gives relief to bodily necessities, but any tempers as well.
Well, here's an issue where people may want to seriously keep their mouth shut. According to a study by Kia Motor UK, 53 percent of drivers think they're the better half-in driving, that is, compared to their significant other (SO). Worse, nearly 20 percent would consider dumping or serving divorce papers if they felt their SO was too critical of their driving skills.