1.For one thing, it can be very expensive to purchase and run a car. For another, owning a car can also cause worry and stress.
首先，买车和保养车是很费钱的，其次，拥有一辆汽车会使人担心，并且让人产生压力（--什么逻辑啊…字面解释）。
2.Second, owning a car can cause worry and stress.
第二，拥有一辆轿车可能引起焦虑，增加压力。
3.For another, owning a car can also cause worry and stress.
对另一些人来说，拥有自己的车也能引起焦虑和压力。
4.and not to worry 'cause worry is wasteful
不用担心，因为担心是浪费
5.cause worry or great difficulty
使烦恼，使担忧