questionsdoes the car drive away?

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No invoking Mythbusters, they got this wrong.

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What kind of car? Cause if it is this one:
Then the car will drive away.

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@dosquatch said, "A car is on a treadmill. The car moves forward at 30 mph. The treadmill moves in the opposite direction at 30 mph. Does the car ever leave the treadmill?"

Given your wording, obviously.

You clearly state that, "The car moves forward at 30 mph". Not that the wheels of the car are moving at a particular rate, but that the car is moving forward.

Assuming a standard-type treadmill, and not some circular setup or a treadmill that goes around the world, then the car will approach the end of the treadmill at 30 mph.

And how dare you blaspheme the MythBusters??

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@dosquatch: I suppose next you'll be co-opting questions from the Turtle Club?

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@magic cave: You bet your sweet donkey I am!

Wait, what was the question? Oh, heck, I'll buy you a drink anyway.

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@anotherhiggins: "You clearly state that, "The car moves forward at 30 mph". Not that the wheels of the car are moving at a particular rate, but that the car is moving forward."

I'm always glad to see someone get this particular point. The tendancy is to get very attached to what the speedometer says.