Two persons, including a woman, were killed on Wednesday as their car jumped off the road and fell into the power channel of the Hirakud Dam on Burla side near the NH-6 in Sambalpur district.The deceased were identified as Rakesh Jha (39) and Shanti (25) of Badabazar of Sambalpur town, police said. However, two others were miraculously escaped the accident. They all were coming in a car from Athar Hazar, a picnic spot, when the incident took place.