Nuna3 is still the fastest solar car of all time. In 2005 the solar car won the World Solar Challenge with an average speed of 103 kilometers per hour. The time it took for the team to cover 3021 kilometers was 29 hours and 11 minutes.
This solar car was the first solar car in the World Solar Challenge that had an adaptive cruise control. That means that the ideal speed (and therefore energy expenditure) determined by Mission Control was sent directly to Nuna. The car could adjust its speed without the driver's influence. Mission Control is a car that converts all weather forecasts and measurements into a speed recommendation to use the energy as efficiently as possible.
The weight of the car was reduced to around 189 kilograms and the aerodynamics had a CdA value that was reduced to around 0.07.
Nuna3 was the last solar car that was allowed to use an unlimited surface area of Gallium cells and could achieve a very advantageous sitting position. After this, the rules of the World Solar Challenge were adjusted, making such a speed a lot harder to achieve with the next Nuna's.