I got a response from the Mayor’s Office today in response to my 311 email. They said the logos had been removed. But, no response to my questions re: payment for defacement of public property or intended use of advertising fee (presumably charged to ZipCar.)
I’ll confirm that “smudged up a bit but otherwise still there” situation. There’s at least one under the Birmingham Bridge that is still as sharp as when it was set down. I see no evidence of any other them being actively removed through either scrubbing or, the city favorite, painting over.