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0% defrost speedrun rule
(files.catbox.moe)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
I know that driving a car will get it up to operating temperature faster, but whether it's more efficient to let it idle for 10 minutes or to drive in a lower gear could be a toss-up.
This is why we need the MythBusters to get federal funding so they test these things.