Epic solar car race begins

An epic 3,000-kilometre (1,860-mile) solar car race across the desert heart of Australia designed to showcase new technology that could one day help develop commercial vehicles got underway yesterday.

The World Solar Challenge, first run in 1987 and last held in 2015, began in a high-tech, futuristic flurry from Darwin's State Square.

Dutch team Nuon is aiming to defend its title but Belgium's Punch Powertrain led the 41 cars -- powered by the sun and mostly developed by universities or corporations -- off on the punishing journey south to Adelaide after a surprise win in Saturday's time trial.

The event has become one of the world's foremost innovation challenges with teams looking to demonstrate designs that could one day lead to commercially available solar-powered vehicles for passengers.

Google co-founder Larry Page and Tesla co-founder J B Straubel are past competitors who credit the event in influencing their careers.

The main action will be the streamlined Challenger class -- slick, single seat aerodynamic vehicles built for sustained endurance and total energy efficiency.

Dutch team Nuon crossed the finish line first two years ago, taking 33.03 hours to make the punishing trip ahead of Japan's Tokai University, the 2011 winner, in a nail-biting climax.