Phoenix to Chicago is about 1700 miles. At 70mph moving average it's a 25 hour drive. Trucking regulations allow a 14 hour drive, ten hours rest followed by I

Phoenix to Chicago is about 1700 miles. At 70mph moving average it's a 25 hour drive. Trucking regulations allow a 14 hour drive, ten hours rest followed by I believe a 12 hour drive. It might be strenous but it's not dangerous. Also keep in mind 1700 miles at the IRS standard deduction of 55 cents a mile is $935. Assuming your car seats four (and all four seats are in use) that breaks down to just under $200/person.