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The braking bag
The braking bag
Luxury cars have plenty of airbags inside these days. The Mercedes concept car has them outside as well with a "braking bag," under the car. When sensors detect an unavoidable crash about to occur, the bag inflates, pushing a metal plate down onto the road surface, helping to slow the car and reduce impact.

NEXT: Pre-Safe Structure
Last updated March 02 2010: 6:03 AM ET
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