Government plans to reduce traffic are turning neighbour against neighbour. Costing millions, Low Traffic Neighbourhoods largely aim to persuade drivers to ditch their vehicles for short journeys and walk, cycle, or take the bus instead. Reporting for Panorama, Justin Rowlatt finds some drivers pitted against supporters of Low Traffic Networks in what has become a battle between those who believe the schemes will reduce congestion and pollution, and those who want the freedom to drive wherever they want