But having people in the wheels,

in that mode, would make the wheels very wide.

 

Of which it should be able to retract and protrude

to extend its width from side to side.

 

Whether to give an option to have people inside the

wheels is a question.

 

 

 

 

 

 

Maybe they are better off sandwiched between  the wheels,

and as collision, maybe descend down below the highest point

of the wheel level, so to cover themselves.

 

The shell should protect them from the side collision.

 

But if sudden explosive 'slide' upon collision to one side,

 

towards the opposite end, will help the passengers into safety,

 

then. That is also good.