Deadzone, take your logic and think eastern SD county. East of the 15 freeway, east of the 805?

Homes near the center of economic activity will stay stronger, not including condos. If you have to commute 25 miles west to your job, then those houses will tumble. Commuting costs going forward will make suburbs obsolete.

If you live in the hinterlands, take up farming to feed your neighbors that will not be able to cover the cost of commuting. By the way, I think oil could go to $125 a barrel. Suburbism without mass transit is the first to fall.