Kentucky → Ohio · Interstate 65 / Interstate 64
Before turning the key for Cincinnati, Ohio, on the homeward run from Louisville, Kentucky, do a quick inventory sweep of onboard equipment: proposal binder, undelivered promotional items, and visitor badge should each go into a separate compartment so nothing slides into the footwell during a sharp brake. Interstate 65 / Interstate 64 accepts the 170 km (106 miles) of the return in roughly 1h 37m. Pulling out of Louisville (the largest city in Kentucky and home of the Kentucky Derby horse race), the road eventually puts the driver back in front of the urban skyline of Cincinnati (the Ohio River metropolis and historic Queen City of the Midwest). Refueling sits near $14.26 for the same 15.5 liters (4.1 gallons) at the EIA national average benchmark. Return reimbursement, calculated against $0.43/km, returns $73.10 into the driver's wallet. Snap the closing odometer with the phone camera and attach it directly to the Clara receipt — internal controls accept photographic evidence without a supplementary spreadsheet.