(Vancouver, WA)  --  Police are investigating after a car crashed into a Jack-in-the-Box restaurant in Vancouver and injured two people.  Fire officials say the driver of the car may have suffered a medical emergency that led to the crash into the Northeast 117th Avenue restaurant around noon yesterday.  The driver and an employee in the restaurant suffered non-life-threatening injuries.  Witnesses told police the car crossed into oncoming traffic, over a sidewalk and into the restaurant.