Did you rear end someone?
Do you have insurance with collision as well as bodily injury/liability coverage? This looks like an average or above average impact but hard to tell for sure without seeing the photos of the other car or whatever else you had hit.
Accidents happen to all of us. Bad timing, bad luck or just because... It happens. I'm glad no one was injured. At the same time, the paralegal side of me had seen so many of these photos and lawsuits that I would hold my reservations of how hurt anyone is (Again, if you had rear ended someone). The whiplash will most certainly suck for awhile but not uncommon for the other driver/passengers to seek treatment a few days afterward.