IDEA: solve transit problem by converting DC into a mortal engine that drives back and forth to everyone's house.
https://www.google.com/search?q=mortal+engine&source=lnms&tbm=isch&sa=X&ved=0ahUKEwin5L3kuLTgAhXCrVkKHTIfC6cQ_AUIECgD&biw=2133&bih=920
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February 11, 2019