Retractable Fifth Wheel Helps You Parallel Park [video]
This ingenious hacker from Egypt put a fifth wheel, mounted perpendicular to the other four, on the back of his beater car. The wheel can be raised or lowered, depending on if he is parking or driving.
The Chevy Volt Gets 230 mpg? Only if you use bad math
Here's a quick bit of obnoxious bad math. It's yet another example of what is called a metric error: that is, the use of a measurement in a way that makes it appear to mean something very different than what it really means.
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