It is quite a slow terminal velocity, however 30kms is more than enough for cruising around the solar system...that's a little over 60000mph. At that speed it's 4hrs to the Moon (say 8hrs for slowing down) or 3.3 weeks to Mars at it's closest (say a month or so with slowing down). Not bad...a lot better than 6 months like they're talking about. You wouldn't even get into orbit at that speed (it's about 14000mph).
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