In Pa, our electric company is starting to use Fits; I saw a PECO company decal on an SSM Fit a little bit ago. There's also been an unbranded Fit I've seen with one of those "How's My Driving" stickers, so I'm assuming that an independent contractor or something is using it as a company car.
And, PhillyCarShare uses Fits, so I always see Fits with that logo.
The trend for a lot of fleet cars seems to be small sedans and hatchbacks. There's some Pa/NJ company that uses Accents as company cars, and I've also seen Corollas. The largest newer fleet car I've seen of late is a Matrix.
Recently, I've seen a few Smart cars as company cars, LOL. That made my day