Thirty-five Greenpeace volunteers shut down the assembly line making gas-guzzling Range Rovers, because urban 4x4s made at the site are wrecking the climate. The Range Rover is the UK's least fuel-efficient 4x4 doing 12 miles to the gallon in urban areas. In the UK, road transport accounts for about a quarter of the emissions that cause climate change, which makes it the second biggest source of greenhouse gases. The trend of 4x4 vehicles as urban run-arounds is increasing the amount of emissions going into the atmosphere.