I suspect that Lamers Bus Lines, Inc. (golamers.com) may be the most disproportionately photographed bus line in America by young Internet-savvy photographers.
These photographs, and many more, are taken from Flickr:
When it comes to the most insulting bus company, however, the unfortunate typography that rendered the Pioneer Valley Transit Authority buses dangerously close to "puta" may give Lamers a run for their money in Spanish speaking communities.
