In the most recent World Solar Challenge, a Japanese team upset the former four-time Dutch champs to win the 3000km solar-car race across Australia with the vehicle you see here.
The Tokai Challenger completed the journey in 29 hours and 49 minutes despite a flat tyre — that's an average speed of about 101km/h. That's actually not the best time in history. That Dutch team we mentioned above achieved the current record back in 2005 — 29 hours and 11 minutes. But obviously conditions like sunlight and wind can skew these numbers on a year-to-year comparison basis. [Global Green Challenge via Wired via Engadget]