B4

The idea of a car powered by electricity is not new. Several early cars were built to run on batteries,

 BUILD

B5

but they had a limited range and the discovery of oil fields in Texas which could provide cheap fuel meant that these cars did not remain popular for long.

 NOT REMAIN

B6

Now, with people becoming more concerned about the environment,

 BECOME

B7

interest in electric-powered cars is increasing / has increased once again.

INCREASE

B8

The designers of the new cars use the latest technology to make them as efficient as possible and the batteries used to power the cars are very different to those found in the early cars.

 FIND

B9

For more than a year now, one company has been selling an electric sports car which can travel over 300km before the battery needs to be recharged.

 SELL

B10

Until now, the car has only been sold in North America, but the company hopes that the car will be available in Europe in the near future. There is only one problem; it costs more than $100,000 to buy.

 BE