Apparently not content to simply build a hybrid vehicle that's both energy-efficient and luxurious, Mercedes has now gone the extra mile with its new 2009 S-Class ESF concept, which packs more than a dozen different safety features including airbags inside and out. That latter outside-the-car airbag is actually a giant braking bag that deploys under the car when it "senses an imminent crash," which not only creates some added friction to slow the car down, but lifts the front of the car up about 80mm to compensate for brake dive. Other uncommon safety features include curtain airbags between the seats, airbags in the seatbelts, reflective tires, and "inflatable metal structures" throughout the vehicle, which apparently both saves space and increases crash
