When the friends have kidnapped the Mafioso and they are careening through the tunnel and crashing into everything--cars, trucks, walls, pillars, etc., the air bags never inflate. When they finally come to a screaching halt at the end of the chaos, the driver slams into the wheel--again, the air bags never inflates in the late model big Mercedes Benz. How convenient. They were able to drive away unscathed to the mansion where the rest of the action took place.