(Hillsboro, OR)  --  One man is dead after being hit by a car while riding an adult-sized tricycle in Hillsboro.  Police say the man was riding across the road near Southeast 10th Avenue and Cedar Street Friday night when he rode into the path of an oncoming vehicle.  He was rushed to a hospital, where he died from his injuries.  Police say the driver stayed at the scene and is cooperating with investigators.