[le-mark]

Seems like there are two different things here; launching passengers and freight, and returning passengers in comfort and without neck injuries. One could easily envision a passenger only winged glider similar to the space shuttle to serve the passenger return role. Indeed, although spacex has nothing like that planned, these BFRs enable damn near anything.

[bostonsre]

Maybe some gyroscopic passenger seats that stay in one position relative to the ground so that they only feel g's going in one direction instead of being rag dolls.

[natch]

The atmosphere on Mars is not as thick as ours so there might be an issue with that winged glider vision. And then there is the moon...

[m4rtink]

Both have much weaker gravity though.

[natch]

But that doesn’t help when you have zero atmosphere. Zero times anything is still zero. And doesn’t help enough when the atmosphere is too thin.