World Solar Challenge

The World Solar Challenge kicks off this Sunday, with competitors set to cover a monster 3,000 km journey from Darwin, Northern Territory to Adelaide, South Australia in cars powered purely by the sun. Here's a quick look at some of the contenders.

Delft University's Nuon Solar Team has won the Challenger class of the World Solar Challenge. Its solar-powered Nuna 7 vehicle arrived in Adelaide at 10:03 a.m. on the morning of the fifth day of the event, crossing Australia from north coast to south in a total of a little over 33 hours.

The Eco-Racing team's entry in the 2013 World Solar Challenge features moving solar panels that track the sun's trajectory to give the car an estimated extra 20 percent more power.

Team Tokai has just reached the "Finish of Timing" checkpoint north of Adelaide, Australia, in the 2011 World Solar Challenge.

The 2011 World Solar Challenge has kicked off in Australia with 37 teams in solar-powered cars racing across the continent from Darwin to Adelaide.

The Nuon Solar Team has revealed its lightest solar powered vehicle yet.

The Cambridge University team is almost ready to make its comeback for the 2011 World Solar Challenge in Australia.

Japan's Tokai Challenger solar vehicle has taken victory against a strong international field in the 2009 Global Green Challenge.