[It is probably in deference to his little passengers that he slows down, marginally. Not really enough to make much of a difference, but it's something of an effort.

Since there's no road to drive off of and no large obstacles to collide with, Knives has no issue at all taking his eyes off where they're going to see what Nai is doing at Vash's prod. Could he do that, that young? He didn't remember, but he didn't think so.]

Well, you're ahead of me, I think. I didn't start really testing out what I could do until ... mm, mid twenties. You're both a year? Year and a half? That's pretty amazing.

[It's as close to idle conversation as he gets, and he does his best to sound encouraging. All the encouragement he never had, and Vash certainly wouldn't have gotten from humanity.]

Don't worry you're locked into just one thing simply because they come most easily. That goes for both of you. If you really want to do something different, just keep at it.

[Blades were easiest, but he could still once upon a time make a little fig tree. Now, he had to rely on a sister for that, but the first one was all his. And if he could do it, they could too.]