"I think traffic lights have invisible tubes that go underground where a person changes the light from red to green."
"Oh. Wow, that's good thinking, Olivia. Do you want that job when you grow up?"
Side note: For the longest time Olivia wanted to work on a cherry picker, working on the wires and putting out the orange cones. (Her words.) Now she wants to be an artist and a ballerina.
Also? She pronounces "cash register" more like "casher disher." So cute.