The 2015 World Solar Challenge has begun, where solar cars race 3000km from Darwin to Adelaide with only the sun as a power source. The World Solar Challenge is the most prestigious solar car race in the world.

World Solar Challenge- Australia The World Solar Challenge is the self-described ultimate challenge in sustainable energy. Teams from all over the world design and build cars that are powered 100% from solar energy, which they then race in a competition that crosses the entire continent of Australia, from Darwin to Adelaide.