This litigation stems from a collision between two pick-up trucks which occurred shortly before 6 oclock a.m. on June 9, 1961, on a graveled county road some 6 miles south of the town of Las Animas. This particular road runs in an east-west direction and on this occasion Hansen, who was driving in an easterly direction, struck the rear-end of a pick-up truck being driven by one Dillon with such force that the Hansen truck was virtually demolished. Hansen himself sustained severe personal injuries in the accident.