Really? Because Google Maps says that the trip from Sterling Heights, MI (where I live) to Davenport, IA (where my parents' live) takes 7 hours and 46 minutes. We typically leave around 10:00 a.m. Eastern and typically arrive around 5:00 p.m. Central. Guess what? That's 8 hours. Put another tally in the Google Maps win column...
Again, I go back to my primary point---this has nothing to do with geography...if you think so, you just haven't been paying attention. This is all about ego and $$$.