Imagine how traumatizing it is to be sliding at 200mph, with no steering, no front brakes, no front wheels. Good thing there are 2 braking circuits!
This failure seemed to be from impact and torsion from the bump when the locked wheel came down on it. I was watching a german feed, they zoomed in on the video and you could see the upright rotating with the wheel, a couble degrees, the joints twisted, buckled then exploded.
Scary, knowing that a couple laps could cause that kind of failure. I am guessing STR would do an investigation before they put poor buemi back in the car.
similar failure from vibration and braking torque:
[youtube]
http://www.youtube.com/watch?v=CGaq_SeXTgI[/youtube]