Two people were injured in a one-vehicle accident on Highway 141 south of Trout Lake on Sunday night.  According to the Washington State Patrol, the SUV driven by a 26-year-old Portland man was northbound on Highway 141 near milepost 21 in icy conditions after 10:30 p.m. Sunday.  The WSP says the vehicle lost traction due to the icy conditions, swerved off the roadway into a field and then rolled several times before striking a tree.  The driver and his 25-year-old female passenger were taken to Skyline Hospital in White Salmon for treatment of injuries.  In its report, the WSP said the accident was caused by going a speed too fast for the conditions.