Japanese car manufacturing giant Toyota has unveiled details of a trial of the new ultra-low emission fuel by Shell Gas combined with Toyota Avensis' D-CAT emission reduction technology.

A fleet of ten Toyata Avensis will use the fuel under the Driving Tomorrow's Clean Technology trial, which will use the expertise of both companies and their cutting edge technologies to create a vehicle with ultra-low emissions.

The trial comes as part of a wider joint venture between Toyota and Shell geared towards the development of new vehicle and fuel technologies combining sustainable mobility and heightened performance.

Shell Gas to Liquids (GTL) is a clean, colourless and synthetic fuel. It is seen as the most cost effective of alternative fuels, with its excellent combustion characteristics and virtually sulphur-free composition delivering significant emission benefits.

Toyota Diesel Clean Advanced Technology (D-CAT) is a "revolutionary" system that utilizes a pgm catalyst to reduce both particulate and NOx in diesel exhaust gas.

Commenting on the trial, transport minister David Jamieson stated: "I very much welcome this initiative. I am very pleased to see leading players in the oil and motor industries working together like this to find creative ways of reducing the impact of road transport on the environment.

"Gas to liquids fuels offer a number of potential environmental benefits, which is particularly good news in a city like London. And when used in cars which are already very clean, the end result is even better."