The part of this sentence from The Autobiography which identifies it as an autobiography is the word I. An autobiography is an account that is personally written by the author him or herself. It always takes the first person or the "I" point of view.
More people will consider driving without passengers.
The answer is: "'You’ve changed lots, Jimmy. I never thought you were so tall by two or three inches.'"
The statement itself contains the evidence. By admitting his awe that Jimmy has changed a lot, it implies that he is surprised at what his friend has become. Primarily due to his appearance. In this statement, he pinpointed the change in his height.
