Texas → Texas · Interstate 35
Before turning the key for Houston, Texas, on the homeward run from San Antonio, Texas, 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 35 accepts the 359 km (223 miles) of the return in roughly 3h 25m. Pulling out of San Antonio (the home of the Alamo and seventh-largest US city), the road eventually puts the driver back in front of the urban skyline of Houston (the fourth-largest US city and energy capital of the world). Refueling sits near $29.99 for the same 32.6 liters (8.6 gallons) at the EIA national average benchmark. Return reimbursement, calculated against $0.43/km, returns $154.37 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.