Объясни, почему в условиях рыночной экономики рядом с крупными центрами по обслуживанию и ремонту автомобилей существует множество

I have got a pet. Its name is Bob. It's a dog. My dog is white and orange. It is very funny. It can run quickly and jump high. It likes to play. It even likes to slide down the hills .My dog is very kind and friendly. Any child can come up to Bob and it will not bark or bite. Besides, Bob loves everybody in my family.It is upset when we leave it alone, but it waits for us. Bob is very happy when we come back. I love my pet very much.