The mishap occurred late last night in Alkapuri area when Hirak Navalawala, son of Babubhai Navalawala, an adviser of Gujarat Chief Minister Anandiben Patel on water related issues, was returning home, they said.
Babubhai Navalawala is also the chairman of Task Force on Inter-Linking of River constituted by the Central government.
"Hirak's car rammed into a wall of a bungalow and then it collided with another car coming from opposite direction," Gotri station police inspector M D Puvar told PTI.