It's the quickest way to test your limits, isn't it?

[ Or so she says, but even Ryoko's looking a little doubtful now... she kind of thought he'd jump at the opportunity to show off, so this is a surprise. Leave it to Ryoko to be the very last person in the room to realize she's being unreasonable. ]

If it's too much... just half a mile, then? That should still be enough to start getting an idea of how far you can go.