And this is considering a car not made for this. A longer or van like model would have more surface. I often wonder if slow small buses wouldn't be possible on solar.
The 2018 MOV winner (https://www.americansolarchallenge.org/the-competition/ameri... ) logged 1762 miles over 58.4 hours, or about 30mph average pace (with a 16.8kWh battery, but no external charging, just the ability to time-shift some energy).
That's with a vehicle that looks like this: https://www.youtube.com/watch?v=aE9gkYsR4TU