Saw this in my rear-view mirror yesterday, so I decided to pull over and snap a picture of it passing by.

Excuse the quality, I captured it on my phone and had to anticipate it getting in the frame (since it takes what seems like minutes before taking a photo!).

So, what is it?

EDIT: You guys are awesome! I knew you'd all have the answer for me.

Unimog 406 series by Benz. DoppelKabine Version

What is this?