I think 'Brandon', the Google employee who lives in the box van, is well on his way to be FIRE'd.
I've got mixed feelings about this new trend. I frequently stay in my campervan and wouldn't have it any other way. When I visit the bay area (California), it's about the only place where I can comfortably stay.
On the other hand, the number of people living this way in and around Bend has exploded in recent years. Most keep their vehicles somewhat clean and functional. Some however are just building massive trash heaps that really are a threat to the community not to mention an eyesore. The one that displeased me the most was a shanti-town community built along the relatively new 'radlands' bike/hike trail near Redmond, OR. Some of the RV dwellers decided to employ really mean pit bull type dogs as a way to make them feel safer I guess. It's no fun when you're riding this trail (which I helped build as a volunteer by the way) and then dodge and run from these mean dogs that come bonding out of the trash heaps or abandoned cars along the way... Some are chained up, some aren't; scary either way..