Hearing an accident on the phone

Tim is in the middle of writing a post about how the weatherpeople got the timing of today's storm wrong (they said it would affect this afternoon's commute), when his wife calls on the way to a meeting in Ashland:

... As I was about to hang up with her, I heard a crack sound and she said, "Oh my God, I was just hit! I'm OK." We hung up so she could check for damage. She called right back to say there wasn't any, but the guy who hit her will be buying himself a new hood. My fear for her safety was magnified because she is six months pregnant. She really is OK, too, because she was wearing her seatbelt (a must by all passengers in our vehicles), she was stopped and the car barely moved when he hit her because he basically used her car to stop sliding. ...