Light: "Hey, L, the speedometer's broken. Using its formula, it apparently says we're both going at a speed of 60 kilometres per hour, yet I'm much faster than you as I'm further ahead. I checked the math. It's right."

L: "Actually, Light, it's not the calculations that are the issue, but rather your brain. Clearly if you had studied the material properly, you would've known that speed measures magnitude without direction!"

Light: "And you measure how far my limits can go until I'm annoyed to death!"

L: "How very flattering of you. But instead of impolitely interrupting, why don't you zip your mouth and open your ears?"

L: "The term you were looking for, Light, was velocity; the change in displacement from end to start. The reason why you're ahead of me even when our speeds are similar is because distance and direction aren't mutual at all; you can sprint on a spot without going anywhere. Kind of like how your brain can't seem to reach conclusions even when it thinks."