No, it's unpossible. But it could be Bill has himself a minor scandal less than 2 weeks on the job.
Horse-drawn carriage bans wouldn't seem to be the kind of thing a new mayor would care to endorse, unless there's money in it for him. This isn't out of the realm of possibility.
It's still early in Billy-boy's tenure, so if this is just smoke and no fire, there will be plenty more to come. I'm sure he likes money. Most people do. I just prefer it be earned the old-fashioned way, not through political power-brokering. In most cases like this, all you have to do is follow the money.