Claudia Woon will attempt to break the efficient fuel record

The hydrogen-fuelled BOC GH2OST, which was manufactured in Aberdeen, is almost silent and the only waste product is water.

The car showcases the technologies that could herald the end of the road for petrol-driven vehicles.

It will be driven by Claudia Woon, 24, alongside petrol engines competing to beat the current 10,705-mile per gallon record for efficient fuel consumption.

The road test will take place on Saturday at the Shell Eco-Marathon Challenge being held at the Grampian Transport Museum in Aberdeenshire.

The lightweight vehicle weighs 100kg, including driver Claudia, and has a top speed of 25km/h.

The project is being masterminded by Kenny Stewart from Aberdeen, who has extensive experience of constructing ultra lightweight eco-marathon cars, and Dave McGrath of Scottish commercial fuel cell company siGEN Limited.

HYDROGEN - THE FACTS The simplest, lightest and most abundant element in the universe Colourless, odourless and tasteless and is easily made Spills remove themselves by rising into the atmosphere Improves air quality and reduces greenhouse gases Internal combustion car engines can be adapted to burn hydrogen cleanly Main emission is water vapour

Industrial gases supplier BOC has developed the car's hydrogen fuel supply system.

The company's John Carolin said: "Imagine a world with no road noise, pollution or petrol queues.

"It sounds unbelievable, but this is not science fiction thanks partly to the hard work of Scottish-based companies.

"By 2020 many of the world's drivers could be taking to the road in cars fuelled by hydrogen.

"The BOC GH2OST can go around the world on the equivalent of two-and-a half gallons. It is almost silent and is emission free. In effect it is a prototype for all cars of the future."

Mr Carolin added: "We are confident we will prove the energy efficiency of fuel cells is superior to petrol - and that hydrogen is extremely practical and safe as a fuel."