It's 8.15am. You're going to be late for work, if you're not careful. Again. At this time of day the truth is that you're more concerned with whether you remembered to iron your shirt, feed the cat or prepare for that important meeting than with the environmental impact of the journey to work. But, according to new research commissioned by EDF Energy, the rush hour is boom time when it comes to consuming carbon, adding up to 29.7 million tonnes of CO2. And if that's not making you cough and splutter already, that's the same as 280,000 lorries driving 100,000km each year.