A “Green Car” is An Oxymoron
Surely cars are getting greener, particularly with the growth in sales of electric vehicles? In reality, there is no such thing as a green car. It’s just that some are less dirty than others. Cars are a major contributor to Green House Gases (GHGs) whether at the tailpipe (diesel or petrol) or the power station (electric vehicles). They cause urban and rural blight with ever-increasing road infrastructure, and pollute our air and water via exhaust, road runoff, noise and waste from maintenance and manufacturing.
A Life Of Grime
One report noted, the car is “dirty from cradle to grave”. Analysts from Germany’s Heidelberg Environment and Forecasting Institute took a medium-sized car and assumed that it was driven for 13,000 km a year for 10 years. They computed its life-cycle financial, environmental and health impacts.
Even before the car has reached the showroom, it has damaged air, water and land ecosystems: every car produces thousands of kilos of waste and millions of cubic metres of polluted air in the extraction of raw materials alone, say the Heidelberg researchers. Transporting the raw materials to factories produces more pollution, and burns more crude oil.
Over a 10 year lifespan, the Heidelberg researchers say that each car produces: 44.3 tonnes of carbon dioxide; 4.8 kg of sulphur dioxide; 46.8 kg of nitrogen dioxide; 325 kg of carbon monoxide; 36 kg of hydrocarbons. So called ‘green’ electric vehichles have to lug around heavy batteries, which themself have a limited lifespan and then require disposal. And it’s not just about the fuel source: cars produce abrasion products from tyres, brakes and road surfaces, and pollute soils and groundwater with oil, cadmium, chrome, lead, copper and zinc. Disposal of the vehicle produces more polluted air, plus PCBs and hydrocarbons.
But surely cars are getting more fuel efficient, and less polluting? Maybe, but the contribution of cars to GHGs is growing as people drive more often and for longer distances and increasingly, in bigger cars (so called Sports Utility Vehicles, or SUVs).
No wonder that one commentator has said
“When you stand in a normal city street, and the whole thing is clogged up with tail pipes, smoky buses and the interminable din from a million diesels, it’s easy to see why the environmental argument can get a toehold.”
Who said that? Have a look below…
“Whole life vehicle waste streams – a global perspective” 26 November 2007, DRIVENet – the UK Network for the design for dismantling, reuse and recycling in road vehicles. This Oxford Brookes University-led network includes motor, engineering and research organisations –
“From cradle to grave” Environment and Forecasting Institute, Heidelberg, Germany. Cited by John Whitelegg, head of the Geography Department, Director of the Environmental Research Unit, Lancaster University.
Guess the quote:
Jeremy Clarkson. Yes really. Motorworld. Page 62 of the Penguin edition. Perhaps we’ve got him wrong, after all….