A new smart car seat can keep a driver calm by actively monitoring the commuter’s physical and mental status, according to the maker. “We’ve built a seat called Active Wellness. And what it does is allows us to understand something about your heart rate, your respirationrate, and then analyze that to really understand your stress level,” said Matthew Benson, an advanced innovation manager at Faurecia, one of the world’s largest automotive-equipment suppliers. If you feel stressed, the Active Wellness seat uses a biometric sensing system to activate a massage function or a heating or cooling sensation. If you feel drowsy, it could let you know before you realize it yourself.