How a F-22 engineer saved another driver's life by crashing into him on purpose:

Duane slammed on the gas, pulled ahead of the renegade truck, and let it rear end him. Risky? Stupid? Incredibly smart!

"Basic physics," explained Duane. "If I could get in front of him and let him hit me, the delta difference in speed would just be a few miles an hour, and we could slow down together." And they did. You see, you dummy? Basic physics.

The driver, who had suffered a heart attack and passed out at the wheel, survived, thanks to daring Duane and the power of science.

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