anyone hailing from kolkata would know how well does a Bus double as doting rocking cradle to numberless office-goers...even today when my car moves next to any packed bus, I make an effort to stick my head out to see the stooped heads swaying in rhyme with the moving bus on a bumpy road. The engine's sonorous rumble adds the lullaby touch and the seats rock them to a short-lived yet consummate sleep.