(Gresham, OR)  --  A high school student is critically injured after a vehicle accident in Gresham.  Bobby Asa and a friend reportedly collided their cars in a driveway just after midnight Tuesday.  Bobby was apparently backing up into the driveway and his friend didn't see him due to darkness, but the friend's car collided into Bobby's and sent it into a neighbor's yard.  Doctors have said there is a "high percentage" Bobby will be paralyzed due to injuries to his spinal cord and brain.