She'd slipped into the driver's seat, was about to pull the door closed and leave, when of course Barnes appeared in the dim lighting from the overhead bulb. Natasha sat back in the seat, put both of her hands in her lap, and gave him a mildly exasperated look.

"Business," she finally said, clipped. "And it's strictly need-to-know. You don't." She smiled at him, a light mockery of the grin he'd been giving her all evening long. "So I really can't tell you about it, now can I?"

Reaching for the door again, she pulled it enough that it knocked against his back, trying to get him out of the way so she could leave.