Interviewer: "Okay, for this next question, I'd like to see how you think. Tell me, how many cars are there in the world?"
Me, picking up my phone: "Hey Google, how many cars are there in the world?"
Interviewer: "Um, perhaps you didn't understand the purpose of the question. I don't really want the answer... I'm looking to see your thought process."
Me: "Oh, I understand. But my thought process is that before I spend a lot of time doing a lot of math based on a lot of assumptions, I should check the world's largest source of instant information to see if it has a credible answer readily available. Because if it did, that would get me the answer you needed while saving us both a lot of time, right?"