I did give him a puny car early on. This was from March of 04, predating the previous strip by a month.
And I tried to give Mr.Otterloop more of a personal milieu once or twice. This is from November of 05. Mad Dog Mayhew was based on several people, not the least my late friend Joe Mayhew, who worked at the Library of Congress for years and who knew more about South American literature and science fiction and everything else than anyone I've yet met (though I doubt he liked military history much).
So these were some early attempts to enlarge the strip before it'd quite found its focus. The characters aren't yet who they were later on and the gags and pacing is clunky. And Mr. Otterloop looks like a bug in those first two. I was going to add a final sentence starting "But...", but I can't think of one.