Tiny homes — you’ve heard of them: Those cute-as-a-button, 200-square-foot, closet-sized prefabs on the covers of glossy shelter magazines, tempting us to downsize and live the eco-chic American Dream. But what we haven’t seen a lot of is the four-wheeled alternative — the life lived by many of those who go against the grain by ditching four walls altogether. Contrary to what most middle-class Americans think, not everyone who lives out of a car is homeless.