World's most economical car

Swiss researchers have developed the world's most economical car that could circle the globe on only eight litres of fuel.

The Pac-Car uses hydrogen fuel cell technology and was developed by a team at the Swiss Federal Technical University headed by Professor Lino Guzzella.

He said the "car could drive around the earth only using eight litres of fuel", and that it could be ready for mass production in the next couple of years.