From What I have heard Most people that stayed had no means to leave in multiple respects. Evacuating for me wouldn't have been a big issue. The only problem would have been traffic and even that all depends. I cant speak in detail on that subject because I was not there and do not know when the evacuation was started. Not to mention I rarely hear about the people who decided to evacuate and how many actually did successfully. So to say how difficult it would be to evacuate depends on what time you choose to what routes you take and so on and so forth. I will say this i do not hear about people who "tried" to evacuate and got stuck in traffic during the hurricanes arrival and ended up getting caught in it. Its almost always the people who decided to leave to late. Right now if I was flipping threw the channels and nothing but Big bad warnings of what was to come was on I would surely evacuate then and there I would not wait.

Not to mention now we are going into The planning step of being prepared not the kit building step. Having a plan first is always important. Multiple planned routes and exits with multiple planned locations to arrive is something that will change with everyone.