Two serious car accidents on Highway 97 north of Chiloquin Sunday afternoon. The first one happened just before 4 p.m. when a truck drifted onto the northbound shoulder, lost control and overturned. The driver was taken to a Klamath Falls hospital with serious injuries. The second accident occurred around 5:30 p.m., when a car driven by a Madras man failed to see traffic stopped and slammed into the back of a Honda Accord, causing a chain reaction involving four cars. Only the man driving the Honda was injured. James Bourg of Yakima, Washington was taken to St. Charles Medical Center in Bend where he remains in serious condition.