Actually, the airbag opened very quickly (almost instantly), but it begins to deflate almost as soon as it opens. I've had the misfortune of experiencing airbag deployment and it looks just like that.
Either way, I'm still laughing over that clip.
Michael
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2008 BMW 535i Space Gray, Black Leather, Dark Bamboo Trim| Sport Automatic with Paddles | Sport Package
2008 BMW M5 (gone, but not forgotten) Space Gray, Silverstone Merino Leather, Madeira Walnut Wood Trim | 7speed SMG | All options
Mods: Corsa Exhaust | RPI Ram Air Intake | H&R Sport Springs | Rogue Engineering 12mm spacers