Which is worse for highway travel?

completely dependent on the flow of traffic

in most cases, the person driving 15 under will be the most hazardous, as most people drive over the speed limit

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C) driving over 100mph

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you should be supportive of our baws who are saving gas

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you should be supportive of our baws who are saving gas

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That indeed was the reference

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Well the guy goin 15 under is getting worse mileage

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Nope. At highway speeds, aerodynamic drag can account for over 50% of the engine’s total load.

C) Altima drivers swerving from lane to lane, blaring music and billowing weed smoke out of the windows.

Many interstates and state highways have a minimum speed of something ridiculous like 40 or 50 mph. It should be higher than that. Everyone drives around 80 around here, so if you're only going 50 that is way more dangerous than someone going 85 in a 70.

I-12

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Nope. At highway speeds, aerodynamic drag can account for over 50% of the engine’s total load.

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False

The correct equation is speed=mpg

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The correct equation is speed=mpg

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You can say this all you want, but physics is not on your side here. The fact that air resistance squares with speed means that a small increases in speed leads to a large increases in drag force and therefore fuel efficiency. In fact, doubling your speed quadruples your drag.

A perfect example of this is the Bugatti Veyron. Many cars can reach 150 mph with around 400–500 horsepower. But the Veyron needs over 1,000 horsepower to reach its top speed of around 253 mph. Why? Because at that speed, air resistance is so extreme that most of the engine's power is used just to push against the air. In fact, at it's top[ speed, more than 90% of the Veyron’s horsepower is consumed just by aerodynamic drag alone.