This is the K1 from kitHAUS, which is a prefab company based in Van Nuys, California. The K1 is 289 sf and costs around $59,000. kitHAUS has a series of modules that can be paired (or not) to create a small weekend retreat, backyard office or study, or gigantic residence. Plus, it can be off-grid or grid-tied with the optional solar setup, depending on your tastes.
"F2" is short for "Flickr Friday," a weekly short posted on Friday with an image from Flickr and a quick description. Feel free to email me your F2 ideas.