Based on the official WSC timing data for the World Solar Challenge, I’ve put together the following distance/time graphs. The hours on the vertical axis are a combination of driving time and rest time at control stops, but not night time. The lowest cars are, of course, fastest.
The first graph (click to zoom) is for the Cruiser and Adventure Class cars. There’s a tight 1–2–3 contest for first place in the Cruiser Class (although Eindhoven is probably winning on passenger-kilometre points), with the University of Minnesota in 4th place. In the Adventure Class, only two cars have escaped trailering.
The second graph (click to zoom) shows the surviving cars in the Challenger Class. Nuon is leading, followed by Tokai, Twente, Stanford, Punch Powertrain, and Michigan, all of whom have made it to the last Northern Territory checkpoint of Kulgera. Solar Energy Racers, Team Arrow, Blue Sky, Onda, and UWS are coming up behind, having last checked in at Alice Springs (A.S.).
The graph shows that the Belgian Punch Powertrain team have been doing a good job of making up time, while Michigan have been falling behind a little.
On a different note, Solar Team Twente have again uploaded a beautifully shot (Dutch) daily recap, which touches on the significant fact that the legal speed limit in South Australia is 110 km/h (rather than the 130 in the Northern Territory):