I was kicking around the idea of building a vehicle as a hideout or retreat. Something with lots of amenities and even more privacy.
At first I thought a boat or zeppelin with improved efficiency and the sun-whatever solar power mod so it could just run forever, but the numbers don't add up.
I've noticed a lot of people just ignore operating times for drones, but I don't want to just hand-wave this. Is there a way to make a vehicle essentially not require fuel?