Couple had a narrow escape after bringing home what they thought was an old gas canister Two litter pickers unwittingly drove half a mile home with a live first world war bomb in the car as their weekly good deed turned into a scene from a Hollywood thriller. Rachel Wills and Simon Briscombe thought they had found an old gas canister while they were collecting rubbish from the River Nidd in Knaresborough, North Yorkshire, on Monday.