H Mustoe, Dutch company Lightyear heralds dawn of the solar-powered vehicle, Daily Telegraph, 14 June 2022, p 23

In the Netherlands, Lightyear have produced a battery-powered car fitted with solar panels that add 44 miles to the normal 388 mile range. Annually, only two months of sunshine are expected in the Netherlands to reach this target, but there are seven months in Spain or Portugal.