claim: In those days you couldn’t have seen across the street for all the carbon emissions and the crap coming out of the chimneys.'
evidence: Average carbon emissions within the haulage industry are falling—in the thirty-year period from 1977 to 2007, the carbon emissions associated with a 200-mile journey fell by 21 percent; NOx emissions are also down 87 percent, whereas journey times have fallen by around a third.