Dallas to Lubbock, Texas 297 miles - 3 hours and 5 minutes and that included a gas/piss stop. 1985 Mustang Cobra
Nashville to Atlanta 110 miles 91 minutes flat - my current car - Porsche 911. and still averaged 24mpg...
I did alligator alley (about 80 miles) in just over an hour - 3 oclock in the morning with the top down. The stars are really cool at that time of night - almost unreal.
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"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower"
-Mark Donohue