The crash bug that I keep hearing about can be alleviated by not hitting the wall/ object/ which in real life would end your race and probably kill you many times over from what I've observed over the years.
If its not a new movie feature, then it will be available as well in my 'Car Focus' application, kinda a reference: http://vimeo.com/2509710
I've uploaded some other LFS Camera features on vimeo as well. Release date would be next year though.
So no major physics changes (?). Exactly year ago I thought I was seeing something different how the cars handled in the FMB video, same happened now. But apparently turns out it was once again just optimistic illusion.