Originally Posted by
Bah Humbug
Take it from me - maintain a true 65mph average (meaning including the pit stops you must make) is hard in the southwest. It would be much harder in other parts of the country, I assume. You can indeed climb from there to 67-68 if you abuse your body, but you're not going much more than 1000 miles before you need to stop lest you become a hazard. Averaging 75mph including stops...
Good example, in other words.
When we drove across the country on I-80 back in 1988, we were managing about 200 miles every 3 hours, till we got to the Ohio-PA border, including stops. The PA turnpike through the Alleghenies, at night, was/is not conducive to going 70-80 mph.