Slowed down with Audio slowed as well
1st video possibly shows some kind of foreshock / shockwave BEFORE the main explosion.
Could also be a reflection off the windshield.. will have to wait and see if more video surfaces. (these are the first two to break on youtube)
2nd video , you can hear a smaller explosion FIRST.. then the larger massive blast follows... also.. you can see the first smaller blast light up the plume before the main blast.
original videos here:
http://www.youtube.com/watch?v=ybo8Pr...
http://www.youtube.com/watch?v=pIHXrG...
