A statement that chooses to say "per gram" rather than "per person" sounds like it's intentionally about cargo, and not people. Also, riding a bicycle (even wh

A statement that chooses to say "per gram" rather than "per person" sounds like it's intentionally about cargo, and not people. Also, riding a bicycle (even while coasting and not expending energy) is not exactly comfortable, so stacking people into a container might not be all that unreasonable a comparison.