11.   What about other machines using petrol fuel?

12.   Without using any fuel, she had increased her speed by several thousand miles an hour.

13.   The fuel is being used on an experimental basis.

14.   If you use solid fuel many approved coal merchants provide budget schemes and supply small quantities.

15.   Boilers and hot water systems will operate more efficiently and use less fuel.

16.   But AEA Technology hopes that the government will allow the fuel to be used in its prototype fast reactor at Dounreay.

17.   Environmentalists are expressing doubts about the benefits of using fuel based on oilseed rape in public transport, as in a recent experiment in the UK.

18.   In addition to better economy, diesel cars use cheaper fuel and are no less environmentally-friendly than petrol-engined models fitted with catalytic converters.

19.   Unlike gas and electricity which have other uses and purposes, solid fuel is predominantly used to provide heating, and VAT is quite simply a tax on warmth.

20.   It affects Scotland particularly badly as, apart from a more rigorous climate, the percentage of homes using solid fuel is higher than in England.