Pretty hard to miss the indicator flashing for 5+ seconds and then a 2t white van moving across in front of you. Lucky for you the other party didn't pursue.
Anyway, dash cams are pretty handy, especially in cases like the second video.
I've got a few close calls recorded on my dashcam in the GT-R, that's why it's locked up in the garage these days (I should really install one in the Poosar).