It's served at Brewhous in a large bottle, either 22 or 24 ounces, I can't remember. But it also apparently comes in a 12 oz. variety.
The strangest part is that it comes with pouring instructions on the side. At first, I thought it was a joke. But no, there there is a technique for pouring the beer correctly to maximize its goodness.
As for the name, well, here's what the New Belgium folks have to say:
Our first venture into organically-produced beer, Mothership Wit Organic Wheat Beer elevates the zesty Wit or White beers of Belgium. Our far-flung Beer Rangers affectionately refer to our Fort Collins brewery as the Mothership, a name that conjures images of earth shot from space and the interconnectivity of it all. Mothership Wit is brewed with wheat and barley malt, as well as coriander and orange peel spicing resulting in a balance of citrus and sour flavors held in suspension by a bright burst of carbonation.The New Belgium Brewing Company is located in Ft. Collins, Colorado and is perhaps better known for its Fat Tire brew (also quite good). The company itself seems to lean green. Aside from the organic aspect of the Mothership Witt, you are greeted with this image of the brewery on their home page.
Have a great weekend. And remember, never board the Mothership without your Wits about you.