The Ford F150 Lightning and Rivian R1T each can go about 2 miles per kwh. The Aptera can go 5 times as far on the same energy. You could fit maybe 50% more solar panels on a large truck (the Lightning is 30% longer, the R1T is 22.6% longer) so with the extra panels it could maybe go 12 miles per day in full sun. That could still be useful.