So persistent -- like a little bug, buzzing constantly in his audial.
It tries his patience, but at the same time, on some level he almost
admires her -- what's the human word for it -- guts. Well,
that's fitting.

He's not about to give her a real answer, of course. If he weren't in
his alt mode, he'd be smiling. "Very little, actually...but you humans
do produce some exquisite vehicles."