Who is BS'ing who?

caferacerx said

yea it sounds like it should work like that, except it always takes more power to go faster and more power requires more fuel, the increase in speed can never overcome the increase in fuel consumption,
they are called the "laws of thermodynamics" and they are the most basic fundamental principals upon which all mechanical things operate,

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Your mistakes are:

1. "except it always takes more power to go faster and more power requires more fuel"

2. "the increase in speed can never overcome the increase in fuel consumption"

It all depends where your power band is and how aerodynamic your car is.

You have a mistaken, simplistic idea of the drag on a vehicle due to aerodynamics. You are generally correct but you have to specifically calculate it for a specific vehicle.

My 64 Barracuda also got better fuel economy at 70 than at 55.

Always believe what you have seen and experienced before theoretical BS. Don't be so fast to put down others, learn from their experience, yet keep a watch on the BS meter.