This is basically pointless, but the economics of modern sailing ships can get closer than you might think. Historic sailing ships where 10x this size and car

This is basically pointless, but the economics of modern sailing ships can get closer than you might think. Historic sailing ships where 10x this size and carried 8,000 tons of cargo at close to the speed of slow steaming shipping. That’s only 1/15th of a Panamax ship, but 8,000 tons isn’t some inherent limit on sails it’s what you got from the technology of the time aka wood. Modern weather forcasts, better hulls, more automation, and the economics get surprisingly close. So sure, today it’s pointless but PV looked like a dumb investment for decades before suddenly taking over the world.