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by shaneofalltrad 3978 days ago
exactly boats are still used when an automobile can't. Just the same as in low light areas, gravity is your only option. Plus I think gravity is probably a cheaper solution to offer, as the weight can be used from local resources while a solar panel is an added cost.
1 comments

Gravity is not the only option.

This isn't a boat with oars. This is a boat where you're given some wooden spoons.