You’ve left out a few things from the driving time.
Stopping for additional fuel (most cars don’t drive 880 miles on one tank. Stopping to eat (most people need to have fuel during a 10.5 hour drive. Oh, and, if the posted speed limit is less than 85 miles per hour (say 65), the time it will take you to wait for the ticket the State Trooper issues you for traveling 20 miles per hour over the speed limit (plus the time it will take you to appear in court - the time off from work - etc. etc.).
Again, thanks for playing. This is fun.
Texas State Troopers do not write tickets for less than 100mph on rural interstates. They issue warnings as a matter of department policy - unless you are rude or combative, in which case the officer does have the option of giving you a ticket.
If you want to include fuel stops, simply include the time it takes to board the plane and for everyone to get situated (30-40 minutes) and it evens out. Food can be eaten both while on the road and in flight. In the case of the car trip, you may even bring food from home and reduce your cost.