https://solarwindow.com/electroflex/
There are already multiple solar roof cars. This should make it easier to integrate solar into these designs.
This is the worlds cheapest SOLAR CAR: https://www.youtube.com/watch?v=Hk6aTKV-des https://www.solarkycar.com/
Alin Chinese Electric Car with Solar Panel CE Approved Electric City Cars, US$1,500.00-2,000.00: https://alinmachinery.en.made-in-china.com/product/zZHTdphPH...
Chinese EV company tests flexible solar sunroof for 50 miles of additional range per day: https://interestingengineering.com/transportation/hongqi-per...