HOSHIAPUR: Four people from Himachal Pradesh were killed in a collision between a car and a Punjab Roadways bus in dense fog near Hoshiarpur Saturday morning when they were on their way to Amritsar airport. Police said Sukhwinder Singh of Chalet village in Himachal’s Daulatpur town had set off for Amritsar with three friends to drop his son Amrit Kumar at the airport, around 150km away. Barely a third into the journey, their car collided with the bus. Amrit is the lone survivor.