I'm wondering if using an electric caravan is a similarly good option for slow travelling on land. It would force you to you stop after less than 300 kilometers

I'm wondering if using an electric caravan is a similarly good option for slow travelling on land. It would force you to you stop after less than 300 kilometers, unfold the solar panels on the roof, wait a day or two (perhaps also catch some rain using the roof) and then continue. Another, less romantic option would be to recharge it somewhere faster ;-)