Porche 918 Spyder

Porche 918 Spyder

PORSCHE have given the go-ahead to the world's fastest "green" supercar.

The German sports carmakers will build a production version of the 918 Spyder concept.

The mid-engined plug-in electric/hybrid will be capable of 205mph, but emit just 70g/km CO2 - that's less than a supermini.

And when the electric motor works together with the petrol engine, it's capable of 94mpg.

No prices yet, but expect it to be well in excess of £300,000 when it goes on sale in limited numbers in 2012.