Someone is actually doing this (a "Cannonball run" on solar only, anyway - no chargers). They are using a Model Y, and at the end of each travel period (less than a day and likely at night or when the sun is low...for hopefully obvious reasons) they pull out all of their small solar array from the back of the Y and set it up on the ground around the car to let it charge for the next leg.
It is turning out to be very slow, of course.
Solar Cannonball Attempt Is Going Slow, But Future Ones Will Be Faster - CleanTechnica
I prefer the renewably-powered Superchargers myself. 100% clean electrons + Cannonball Run completed much faster