What do we learn about the man from the dialogue?

W: I’m going to look at new cars tomorrow. Why don’ t you come along?
M: I’ d like to, but I don’ t want to be tempted.
W: I’ m sure you could get a good deal.
M: Yes, but I can barely afford a new car right now.

M: I was locked in last night.
W: What do you mean by "locked in"?
M: Well, my roommate thought I was out, so when he left, he locked the door from the outside.
W: Then how did you get out?
M: I called my neighbor and gave him the key from the inside.