Bad day at work and for those on board, very lucky escape for some. This could have happened anywhere though, having heard the tower recording the aircraft called a mayday with an engine failure. The radar trace looks like he's trying to find a clear area to stuff it; from the video it looks like he has stretched the glide to miss the buildings and road, left engine isn't fully feathered but clearly not producing power leading to a stall/wing drop, you can't roll them that quick - it was out of control a good couple of seconds prior to hitting the freeway. Lucky it just clipped it instead of hitting square, that would have been game over for all.