More Gas Pains

Today's L.A. Times has a good article about how idiotic people can be when it comes to trying to save money on gas. (I've seen the tailgating big trucks one enough; that's pretty frelling stupid.) Myths and truths:

Belief: Driving close behind a truck improves gas mileage because the truck cuts your wind resistance.

Reality: True, but it's also dangerous.

Belief: Gasoline stations near freeway exits charge higher prices.

Reality: Generally true.

Belief: You get more for your money if you fill up when it's cold because gasoline is denser at low temperatures.

Reality: Not really. Any difference would be insignificant and besides, most pumps correct for temperature.

Belief: Turning off the air conditioning saves gas.

Reality: True, but if you then roll down the windows, the increased wind resistance may eat up any savings.

Belief: Gas prices go up on the weekend, so fill up during the week.
Reality: Generally false