Take a look @ DC Comics' "Green Arrow" #10, available November 2, 2016, written by Ben Percy and illustrated by Juan Ferreyra, with covers by Neal Adams and Ferreyra:
"...in 'Murder on The Empire Express' Part 1, 'Queen Industries' 'Trans-Pacific Railway' is an undersea vehicle that symbolizes world peace-which makes its maiden voyage the perfect place for the 'Ninth Circle' to stage a high-profile assassination.
"Luckily, 'Green Arrow', 'Black Canary' and 'John Diggle' are on board as outlaw stowaways..."
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