Some have a solar panel in the roof to run a fan to keep the interior cool when parked, but most are large, heavy, and they can't put enough solar cells on the car to charge the battery. This EV is strong, light weight, and probably the most efficient EV in the market...or will be when it makes it to production. It appears to be getting closer to market...they're saying they'll be rolling customer cars off the production line towards the end of this year (2026), but based on their past predictions, that may slide into 2027...