In response to a growing number of people living in vehicles several cities in California have created local Safe Parking Programs which offer a limited number of safe overnight parking spots.
I saw a CNN clip about a Santa Barbara bus driver (employed full time) living in his van, other cities with similar programs include San Luis Obispo (SLO) and San Diego.
These three are not cities I would have expected to be receptive to this idea.
Overnight parking program for homeless launches tonight | The Tribune & SanLuisObispo.com