The deceased identified as Gopal Sharma (38), his wife Sudha Sharma (35) and son Dhruv were returning to Gurgaon last night after attending a marriage party in Hisar.
After its collision with the jeep, the ill-fated car dashed against another car, which was carrying Gopal Sharma's relatives, leaving three of them injured who were admitted to civil hospital at Hansi.
The police have arrested Jaswant, resident of Talu village, the driver of pick-up jeep in connection with the accident.