She doesn't know much of anything about car models, especially not futuristic replicas of apparently such limited edition vintage ones, but Max cuts himself short and Ava stares at the milkshake in her hand like she forgot she even had it.

And then her eyes widen, because in the heat it's definitely already melting, a bit of milkshake sliding down the side of the curved glass and about to DRIP and Ava makes an emergency lick to prevent it from doing so.

Her expression is definitely one of GUILT and HORROR that she almost allowed something so tragic to occur but mostly amusement, and then she shoves her arm and the offending milkshake through the door. She's still holding it, of course, but it's technically outside the vehicle. "I'd drop it, but I feel like you'd lock me in the trunk if it splattered. ... So why'd they only ever make two?"