Luxury car makers often lead the charge on the subject of new security equipment. Cadillac is unleashing a brand new raft of safety features for 2013 models targeted at reducing distracted driving and other hazards. Among others, Cadillac installing vibrating seats as safety feature. I have heard that the seats use “haptic feedback,” which is employed by other automakers in steering wheels. Cadillac is saying that the idea behind the vibrating alert is in order to have a warning system for drivers who are hard of hearing or have the stereo up too loud to hear the chimes or might be annoyed by various bells and whistles.