FoxTrot by Bill Amend for October 09, 2000
Transcript:
Jason: Mom, your car holds how many gallons of gas? Andy: About 15. Jason: And it gets how many miles per gallon? Andy: About 25. Jason: And was your gas tank full when Peter took it to run errands? Andy: Yes. Jason: And Peter had it out for how long? Andy: Maybe two hours. Jason: And the tank is how full now? Andy: Let me go check. Peter: Well, SOMEBODY told her how fast I was driving! Jason: Don't look at me. So you're grounded for HOW many centuries?
Assuming he was driving the entire time and the gas tank is empty now, he was driving 187.5 mph.