Gurugram, Dec. 13 -- At least two people were killed and five others critically injured in a freak accident caused by a boulder falling off a moving truck, which then triggered a chain of collisions on the Delhi-Jaipur Expressway near Manesar on Friday, police said. The crash occurred between 4.15am and 4.30am on the Rampura flyover when a boulder slipped off a truck and landed directly in the path of a Maruti Ertiga carrying seven people from Jaipur to Delhi. With almost no reaction time, the Ertiga ploughed into the boulder, was violently tossed into the air and flung across the divider onto the opposite carriageway, investigators said. An oncoming truck laden with bricks then rammed into the car, crushing it almost instantly. Police iden...