^^^This
I've run it a couple of times in my head and figure that it's going to be a mad rush up the 17, 10, and every other freeway headed out of town. It would be traffic jam on steroids. Surface streets wouldn't be much better, since none of them were designed for evacuations.
On top of all that, I have family members that have chronic health problems. If we weren't able to make it to a safe place with a functioning pharmacy/hospital within a set amount of time (depends on how much medication was on hand at the time), there would be serious problems. If the shit is going on pretty much everywhere, there's really no point in bugging out for me.All that considered, along with the fact that most of my family's necessities are perishable, consumable, and far too expensive to stock up on, bugging in is the best option for me.
If the crisis/zombie apocalypse lasted more than a few months (tops), then s*** has gotten really real. I would leave with my brother and whoever else (friends and family) I could group up with and start out north. A lifetime of hunting/camping/generally playing in the desert and northern AZ will hopefully serve me well. By the time bugging out will be the best option, I'm figuring things will generally f***ed. I'm not even sure travel by road would be an attractive option. If the cities are f***ed and the crisis is pretty much everywhere (most likely), there's a couple of places that are decently remote and hard to reach that I might head to.
All this excludes situations where getting out of town is absolutely necessary. If anything happens with Palo Verde and the fallout is headed this way, I'm getting out of town even if it's on foot, bicycle, or off road motorcycle. At that point, I hate to think of the decisions that would have to be made, but those would be dark, desperate times. Only thing I know is that I would do my best to keep my brother and whoever else I could save safe. All this is really scary, but it has to be considered.