Different of a taxi

I learned the different of a taxi between Japan and America yesterday in Survival English Conversation.
A Japanese taxi has comfortable points. It’s opening the door automatically and clean. Mr. Morrow had a good impression at the first time when he watched the door opening automatically. On the other hand, the American taxi’s charge is much cheaper than that of Japanese one, but we give the driver tips in America. It is about 20 percents of the charge.
I had a good time in the class. I want to take it next week. [93words]