Arizona → Arizona · Interstate 10 / Interstate 19
The night-time return from Tucson, Arizona, to Phoenix, Arizona, deserves its own protocol: anti-glare driving glasses on, dashboard light dimmed to the lowest setting, and well-lit truck stops pre-identified as candidate rest stops. The 201 km (125 miles) of Interstate 10 / Interstate 19 and the 1h 55m of driving cross zones with patchy cellular coverage during the small hours. Approximate refuel cost on the way back stays at $16.84 for the 18.3 liters (4.8 gallons) consumed. Forecast reimbursement for the night leg holds at $86.43 applying the prevailing $0.43/km — without an automatic night premium in the IRS standard mileage rate (2025) table. If the company pays night-driving overtime, open a separate line on the Clara receipt: the payroll integration already recognizes the entry.