定义一个汽车类，然后定义一个集合，加入5个汽车对象，然后对元素进行迭代输出（要求取出汽车对象中存放的车名、轮子个数、排量等信息）。-Define a car class, and then define a collection of objects added to five cars, then iterate over the elements of the output (requires removing objects stored in the car car name, number of wheels, displacement and other information).