This might just make you think...

According to the Stern Review on The Economics of Climate Change, straight from the Government Economics Service, some of the biggest contributors to global CO2 are:
24% : Power Generation
14% : Transport (Planes, trains, cars, ships etc)
14% : Industry
8% : Heating Buildings
3% : Rotting waste matter

Which countries are the main polluters?
20% : USA
15% : China
Sub 2% : UK

How much CO2 comes from cars in the UK?
Transport accounts for 22% of the CO2 emissions in the UK, half of which comes from cars.

SUV's and 4x4's are the main culprits, right?
Eh, no. SUV's and 4x4's only account for 5% of the cars on the UK's roads and thier contribution to the UK's total CO2 emissions is 0.5%

So, if every UK SUV and 4x4 owner ditched them and bought a Toyota Prius Hybrid or the like, what would happen to our CO2 emissions?
CO2 emissions in the UK would reduce by only 0.3%

What effect does the UK Motorist have on global emissions?
UK motorists contibute around 0.22% of the global CO2 output each year. The UK's SUV's and 4x4's produce just 0.008% of the worlds CO2 emissions.

Are UK total CO2 emissions rising?
No. Interestingly, UK CO2 emissions have reduced by 5.7% since 1990. In contrast, China's have risen by 89% in the same timescale, meaning China now emits twice as much as the whole of Eurpoe combined.

What is the main cause of CO2 pollution?
Electricity generation by burning coal and gas.

No-one builds coal-fired power stations any more though do they?
Oh yes... China is planning an additional 562 coal-fired power stations over the next 8 years - one every 5 days. India is planning 213 coal-fired plants, and the USA a further 72. Each of these will on average produce a further 4 million tonnes of CO2 per year. To put that in perspective, just 18 of these stations will emit CO2 levels equivalent to that from all UK motorists...

If you could completely turn the UK off for one year, how much would global CO2 emissions decrease?
Actually, they'd still rise, as within a few months the rate of increase in Asia would more than outstrip our annual 600,000,000 tonnes output.

So, what would happen if everyone in the UK drove a Range Rover V8?
As of 2005, there were 30,874,018 cars registered in the UK. If they were all Range Rover V8's, and each covered 12,000 miles per year, total CO2 emissions would increase by 10% in the UK, and 0.2% worldwide.

Surely aviation is another important source of CO2 emission?
Avitation is currently responsible for just 6% of the UK's total CO2 emissions. But this figure doubled between 1990 and 2000, and if current trends continue, it will double again by 2030.