text: First of all, studies have proven that the use of automobiles is linked to the levels of stress and unhappiness that people feel. Source one elaborates on this by discussing a city in Germany that decided to give up cars. It quotes a woman who says that when she had a car she was always tense, but living in Vauban (the car- free city) has made her much happier. She is able to walk or bike everywhere that she needs to be in town. This opportunity to increase happiness is also mentioned in source three, which quotes a businessman who says that limiting car usage is "a good opportunity to take away stress." The alternative he choses is to ride a tandem bike with his wife. This allows for more bonding with his wife as well as increasing their physical health, which plays a vital role in mental health as well.