The hottest costume for Halloween this year – at least here in the Pittsburgh area – turned out to be the infamous sinkhole bus. Unless you’ve been living under a rock, by now you’ve heard about the Port Authority bus that got stuck in a sinkhole in Downtown Pittsburgh just days before Halloween. The bus has since been extracted and an investigation to determine how the ground caved in is underway. But some Pittsburghers decided to get particularly creative and used the situation as inspiration for some very unique costumes last night. Yes, many locals dressed up as the bus in the sinkhole for Halloween and many of those costumes can be found on social media.