Solar cars can absorb the rise and fall of solar energy by adapting their speed.

If racing cars can drive on solar energy, then why do normal cars still need fossil fuels?
Around 30 cars race 3,000 kilometres across the Australian continent in the “World Solar Challenge”. Solar cars are electric vehicles that generate their own electricity, by means of around 6 m² of solar panels installed on their bodywork, and a series of linked up batteries that serve as a fuel tank. If we want the car to survive in the longer term, it should become slower and lighter again, trimmed to the efficiency of solar panels and batteries.