Causaly says " You'll hit the wall at 1000 mph, can be compensated for with about 7000 joules, which you can get from a sip of cola" my god, what a sense of perspective I just received.,(reply>), @EebstertheGreat Okay. ~4 liters of Mountain Dew. It's a LARGE sip.,(reply>), *Never drink cola again",(reply>), I don't know where Tom is getting his numbers but I suspect he's off by a factor of 1000. a 70kg person moving at 1000mph has 7 000 000 Joules of energy, not 7000. Meaning you'd have to consume a fair bit more than a sip of cola. Still, 7 000 000 joules is only about 1700 kCal so itd be about a full day's worth of food energy for a small person.,(reply>), *Casually,(reply>), @Adam Mullarkey because friction and heavy