A gang of knife-wielding robbers attacked a man and stole more than HK$900,000 in a daylight assault on a car on Monday morning in northern Hong Kong.The three men inside the car had tried to escape their attackers, but crashed into the back of a truck.At about 9.45am, the gang of about eight approached the three men in the seven-seater car, which was parked on Yuen Long Tung Tai Street, Yuen Long. The trio had with them a cash-filled bag.According to police, one of the victims struggled with…