One piece of technology is necessary for me

Since the first automobile was introduced into our life, we can notice that a lot of changes have been happened around us. As a modern transportation, it not only brings convenience to our daily life, but also enhances the efficiency. So I think the automobile is one piece of technology that could not live without for the modern society.
One reason of using the automobile is necessary for me is that a automobile give the me much more convenience compared with other transportations, such as bike or bus. For me, I like to go to a supermarket or the grocery stores once per week and usually buy enough food for whole week at one time. I can not imagine that I need to carry a lot of food and groceries and maybe take a crowded bus to reach home. I hate such a bad weekend! If I have a car, I could put all stuffs in my trunk and go back home with nice music and happy mood of shopping.
On the other hand, an automobile could save my time and energy. It takes me forty minutes to our school from my home if I take the blueline. If I could drive a car, it only takes me fifteen minutes. But I do not drive a car to go to school now because I cannot afford the parking fee in downtown.
From what has been discussed above, in order to lead a convenience and an efficient life, an automobile is necessary to me.