Not much of a recommendation for taxi drivers

"Why are you dressed that way? Is it a disguise?

"A pretty good one. But in point of fact, it's the national livery of my present station in life."

"What do you mean by that?"

""Simply that, out of my old job I've turned to the first resort of the incompetent: I'm driving a taxi."

(from The Lone Wolf, by Louis Joseph Vance)