Interesting idea, though I don't understand why it's confusing people.
I do think that this would be useful in certain situations. Say you were on the giant spaceship I suggested. If you had an interior, you could use this to move around at a reasonable speed, possibly allowing boarding. (Except for the whole thing where you can't hurt people in the same vehicle as you...)
In general, it would allow you to move around larger vehicles in a more realistic fashion as opposed to cycling through seats with period and comma.
Unfortunately it's a bit of a moot point for the moment as we do not know whether or not this is possible. I think it is, though I'm not certain.