Tony and Ziva have no personal space and she’s all up in his face inside the car, calling him out on being a dick, grabbing his shoulder and hand on his thigh and it takes them like two minutes to realize it BECAUSE THEY ARE SO USED TO IT
And the fact that the direction POINTS IT OUT is so telling. They could have brushed it off as another Tiva/acting choice to have them be all over each other as usual. But they stop, and Tony brings attention to the fact that she’s got her hands on him, and she realizes it, but does nothing about it either. They’re like, oh, are we really going there right now?
And jumping ahead for a minute: when the victim’s supposed wife asks Ziva if she’s met her soulmate met, she touches Ziva’s arm -- not unlike how Ziva touched Tony’s arm in the previous scene, to which the show just drew our attention.
WHY DID THEY DO THIS TO US.
They really were going there, setting up the Ziva-Tony dynamic, or at least heavily implying her unrequited feelings for him while he was still nursing a broken heart over Jeanne... But then they dropped it.