At last. I saw this long ago. Thanks for spotting,it.
Re: mileage I remember watching this with my father, a huge fan. When COLUMBO brought up the mileage difference he yelled out " Mechanics would NEVER record the mileage!". Yet, the comments here seem to think that they would DEFINTELY note it down . Funny, the things one remembers! All in all, a top ten episode.