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When a car is at a stop and ready to launch (especially with manuals or stick shifts), applying gas to rev the car up for optimal launching RPM is done. When launched correctly like this, the car will quickly find it's power zone where the maximum horse power is (say @ 5000 RPM). When a car is rolling the RPM's are already in motion, and when around 5 MPH, the RPM's are probably around 1000 or less. Thus more time will be required fro the car to hit it's target horse power zone (so to speak). The 0-60 stat best reflects a cars' straight line acceleration and horsepower. The 5-60 rolling acceleration time is used best when comparing V8's or engines of greater size and displacement. This stat reflects 'torque' better than the standard 0-60 because you will have far less wheel spin since the car is already moving. Torque is basically a car's ability to create power at low RPM's.
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