House on Wheels
Seven hours into the road trip, Quentin says "the minivan has become a kind of very small house" (3.7.2). There's a den, an office, a living room, a kitchen, two bedrooms, and, sadly, no bathrooms. It's like your average apartment in Bushwick, but larger.
Maybe it's sleep deprivation, or maybe Quentin is thinking about how you can really make a home anywhere. After all, that's what Margo Roth Spiegelman is trying to do because she doesn't call her parents' house or her hometown her home. The difference between Quentin and Margo, however, is that Margo is trying to do it all alone, while Quentin gets by with a little help from his friends. As he says, "You can't beat the open floor plan" (3.7.9). He's enjoying their time together, and that's what home means to him.