OC Emergency Personnel were alerted for a vehicle rollover into a house with entrapment.  First arriving units reported a vehicle was adjacent to the structure with one person trapped inside.  The vehicle was traveling west bound on Rt 50, crossed the median strip, went airborne end over end, struck a billboard and settled next to a house.  One victim was extricated and transported to the landing zone where he was medevaced to PRMC.  (See video clip)