I've submitted chapter 2 of Survivors for posting, so it should be on the site shortly. I have also reposted chapter 1 with some corrections and to clarify the lack of extensive descriptions of car wreckage and mayhem....
The short answer is that the event occurred around midnight and the characters are currently in a mostly residential area that would not have extensive traffic to result in massive wreckage for Jack and company to navigate through.
Thanks for reading,
-Charlie