Originally Posted by Anticyclone
Looking at the slow motion shots, there appears to be a small bump in the pavement that causes the initial loss of traction.
I've been watching rnickeymouse's videos for a long time. Paraphrasing something he wrote in the comments a long time ago, that is more than a "small bump." There is a big heave there that loads/unloads/loads the suspension when you cross it.