Wild footage of a teenager being slashed by a man armed with a machete at a Melbourne petrol station has been released.CCTV captured two machete-weidling men in balaclavas jumping out of a car and assaulting an 18-year-old man who was stopped for petrol in Doreen, in Melbourne’s north east on Sunday night.It comes just a week after the Victorian government fast-tracked a ban on the sale of machetes, following a shocking brawl at a shopping centre in Preston in May, and just two days after another Melbourne shopping mall, Caroline Springs Shopping Centre, was locked down following a machete attack.