EEVblog has an informative video on this topic [1] looking at the 'Lightyear Zero' solar car (not the Sion Sono Motors this article is about) The presenter is

EEVblog has an informative video on this topic [1] looking at the 'Lightyear Zero' solar car (not the Sion Sono Motors this article is about) The presenter is in Sydney, he's got a large roof-mounted solar array - 8kw peak output, and about 8x the area of the cells on the car. And he still struggles to cover a 25-30km daily commute with solar, achieving it only 80-90% of the time. And good luck parking your car somewhere that gets more sun than a rooftop installation in Sydney :) However, the Sion's $25,000 price tag is a lot better than the Lightyear Zero's $250,000 price, so they've got that going for them. [1] https://www.youtube.com/watch?v=xIokNnjuam8 https://www.youtube.com/watch?v=xIokNnjuam8