But they're also trying to market it as environmentally friendly as it can run on bio-fuel. They boast about the reduced carbon emissions:
At the 2008 Geneva Auto Salon, Bentley announced a far-reaching environmental programme to reduce CO2 emissions and improve fuel economy across its model range.
An important element of this strategy is by 2012 to make the entire Bentley fleet capable of running on renewable fuel through the introduction of FlexFuel technology, where engines are capable of running seamlessly on bioethanol, petrol or any mix of the two.
At the same time Bentley declared that this would be achieved without sacrificing its well-known performance and luxury.
This statement of intent has taken shape in the Continental Supersports – a car that balances extreme potency with the pioneering use of biofuel technology in the luxury sector.
The result is a net CO2 reduction of up to 70 per cent on a well-to-wheel-basis, the measurement of CO2 release of a fuel from its production (well) to its combustion or deployment (wheel).
Bioethanol can be derived responsibly from crops such as corn, soybeans, sugarcane and switchgrass. Second generation bioethanol uses the non-food fibres of the plant (biomass), as well as agricultural waste and forestry residues. These are collected and refined into cellulose ethanol.
CO2 is absorbed by plants as part of the photosynthesis process, and cars using biofuel then release that CO2 back into the atmosphere, thus creating an unbroken energy cycle. In addition, biofuels are not derived from fossil fuels, making them a renewable resource ensuring a secure supply into the future.
Bioethanol is often blended with petrol in a variety of percentages ranging from E10 (10% bioethanol) to the most widely known, E85, blended to a ratio of 85 per cent bioethanol to 15 per cent petrol to ensure cold-start capability.
Bioethanol presents unique engineering challenges compared with petrol, due to its chemical composition and characteristics. E85 biofuel has a very high octane rating of 105 but a lower energy content that requires a 30 per cent increase in the engine fuel flow rate.
It looks like a cracking car. But environmentally-friendly? Please. If it manages 15 miles to the gallon I'd be surprised.