Tennessee → Kentucky · Interstate 40 / Interstate 65
The night-time return from Nashville, Tennessee, to Louisville, Kentucky, 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 280 km (174 miles) of Interstate 40 / Interstate 65 and the 3h 15m of driving cross zones with patchy cellular coverage during the small hours. Approximate refuel cost on the way back stays at $23.46 for the 25.5 liters (6.7 gallons) consumed. Forecast reimbursement for the night leg holds at $120.40 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.