One of the first stories along these lines was published some years ago and it relied on the creation of what came to be called the U-Haul Index - for instance it costs $5992.00 right now to rent a truck one-way to Nashville from L.A. and only $748.00 to rent the same truck to move back:
http://www.housingbubblebust.com/UHaulIndex/California.html
Looks like all the criminals are moving to Nashville. lol