Post-scarcity being a literal pipe dream, interstellar travel being pragmatically impossible and jumping to another goldilocks planet once we ruin this one off the table, humanity must begin to colonize the planets and moons around us in order to survive. But terraforming such barren wastelands will take immense resources, and to transport such will take serious cargo space. So what kind of vehicles do you envision being developed to transport freight and people across the solar system?