"We've replaced the brake pads on your Porsche 911 with Apple iPhones"
O.K., we might be exaggerating a little. Now what would happen if instead of coffee, a 2002 Porsche 911 was used. And instead of Folgers crystals, four Apple iPhone 5s units and four Apple iPhone 4s units replaced the front and rear brake pads on the car, respectively. Could the iPhones stop the 911 at various speeds?
At 20mph, there was plenty of grinding when the brakes were applied, but all eight handsets were apparently still working. At 40mph, the iPhones started falling apart and a small fire needed to be extinguished. At 60mph, well, we don't want to spoil the ending. We will tell you that some of the phones were useless after this test, even though they showed signs of life. The remaining units were as dead as could be.
We should remind you not to try this at home. Smartphones are not made to be used as brake pads.
source: EverythingApplePro via CNET