A driver and passenger who inhaled nitrous oxide while travelling at speeds of up to 139mph in a 30mph zone before a fatal collision have been jailed. Uways Hussain, 20, and Usmon Mahmood, 23, filmed themselves inhaling the gas from a balloon, running red lights and weaving through traffic before hitting Sylvester Abayomi, 50, in Manchester . Manchester crown court was shown footage of the collision, which happened at the junction of Green End Road and Kingsway, at 4.30am on 9 March. Abayomi’s partner, Denise Doyle, told the court: “Sylvester was simply on his way to work. An ordinary hard-working man. “He should have returned home to me safely that day. Because of your actions he never did.” Addressing the defendants, she added: “You left Sylv to die alone.…