New trams will be unveiled in Nottingham today, as part of a project to expand the city's tramway network, with the construction of two new lines.
The timelapse video shows how the trams were made in Barcelona. Five new trams will be run on the lines by mid-2014.
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A large tent has been put up around the area while investigations continue.
The kind gesture touched the hearts of many who shared and retweeted words of support for the officer on Twitter.
Two workers were forced into a back office as the robbers tried to force their way into a safe, police say.