The explosion took place inside the cab at Bijbehara, 45 kms from here, resulting in on-the-spot death of two women and injuries to six others, the police said, adding that the identity of the deceased could not be ascertained yet.
Four of the injured -- all women -- have been referred to a hospital here in critical condition.
One of the injured -- Nirmala (60) -- succumbed to injuries at SKIMS hospital here, they said.
The other injured have been identified as Geeta (50), Indira Parvatai (73), Neeta (54), Jaishree (65) and Jaswanti (72).
Although a gas cylinder had exploded inside the car, a forensic team has been sent to investigate into other possibilities, they added.