A gas tanker exploded on a motorway in a Mexico City suburb early Tuesday morning, killing at least 23 people and injuring dozens more.<br /><br />The natural gas tanker was travelling north along a highway between Mexico City and Pachuca in the suburb of Ecatepec at around 5am.<br /><br />According to local police, the truck was speeding and the driver lost control, hitting a central divider and several cars.<br /><br />Over a dozen cars and 45 houses along the eight-lane highway were hit by the blast, according to initial reports.<br /><br />One of the truck's gas tanks was blown a hundred metres by the force of the blast, landing between two houses and atop parked cars.<br /><br />One resident described seeing "a ball of fire" which resembled "a spotlight in the whole window.<br /><br />Authorities opened a shelter for the nearly 100 people left homeless by the fiery blast.