With a little elbow grease and knowing where cops might be, you could work those numbers down. ;)

I have to have the road trip conversation with friends before we do anything. It's like, do we want to make this leisurely and the drive is fun, because that's going to need an itinerary and planned stops, or is the destination all that matters? Because I can make that 37 hour drive in about 38, give or take. Most of the time, I'd prefer it that way. Roadside destinations and 'gotta stop here' restaurants are always pretty lame, in my experience.