Using Athens GA as a starting point in 'northeastern Georgia', it is over 725 miles to Columbia MO. There is simply no way that you can drive that in a day, let alone ten hours. Yes, I also got the same driving time estimate, but you have to remember that computer generated time estimates bear absolutely no resemblance to reality. For starters, they assume that you can drive at or above the speed limit for every second of every minute of every hour that you're on the road. They allow no time for traffic, construction, fuel stops, meals, or even time to go to the bathroom. And worst, they assume that a human being can just keep up a monotonous drive for hour after hour and maintain the alertness needed to operate a two ton vehicle at highway speeds. There is a reason that professional long-haul drivers are forbidden by law from driving more than 600 miles a day. It is simply unreasonable, and more importantly: unsafe.
The drive to Pallyup will take a minimum of five days to drive, plus any additional days for weather related delays. Safe and sensible goals for each night's stop, assuming good weather, would be roughly Mount Vernon IL, Omaha NE, Moorcroft WY, and Deer Lodge MT (assuming he uses the I-90 routing).
AZBuck