Based on data from the WSC web site, the chart above (click to zoom) shows Challenger-class timings. It is drawn with reference to a **baseline speed** of **83.89 km/h**. This is the speed that would complete the race (to “end of timing”) in 4 days and 5 hours (that’s a substantially slower baseline than I used in 2015). The left vertical axis shows how far **behind** the baseline cars are driving. Straight lines represent cars driving at a consistent speed. The right vertical axis shows arrival time at “end of timing” **in Darwin time** (Adelaide time is an hour later).

Open coloured circles show simplistically extrapolated arrival times. For example, I would expect Nuon to arrive a little after 2 pm Darwin time (3 pm Adelaide time) tomorrow. The rest of the top five should arrive later in the afternoon, or early Friday morning. All the other Challengers are potentially in trouble, but it’s impossible to say for certain.

The grey stripe on the right (11:00 to 2:00 on Friday) shows the permitted Cruiser class arrival window. Eindhoven (40) and Bochum (11) are on track to arrive inside this window. Arrow (30) and HK IVE (35) will do so if they speed up a little. Minnesota (94) and Apollo (95), travelling at 60 km/h and 58 km/h respectively, are in serious trouble, timewise.

The chart above (click to zoom) shows Cruiser scores as at Kulgera (which lets us compare apples with apples). Each team has three coloured bars: first the number of **person-kilometres**, which should be large (black icons show occupied seats and white icons empty seats), then the **energy usage**, which should be small (number of charges, which is 4, times battery capacity), and finally the **overall score**, which should be large again (it is the ratio of those first two numbers). The black number inside the final bar shows the ranking. All bars are scaled to a percentage of the maximum, because the exact numbers do not matter – only the relative relationships. The rule for the final score bar is: **first bar divided by second bar, then scale so that the largest result is 80%**. The practicality score (out of 20) will be added to that final result.

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