Texas → Texas · Interstate 35
On heavy-rain or dense-fog days the Austin, Texas, to Fort Worth, Texas, leg routinely demands well more than the 3h 9m estimated: Interstate 35 carries known hydroplaning hot spots and reduced-visibility corridors that justify dropping to 35 mph through a few short stretches. The outbound run covers 330 km (205 miles) over varied topography between Austin (the capital of Texas and a fast-growing tech corridor) and Fort Worth (the fifth-largest city in Texas and historic livestock-trading center known as Cowtown), demanding sharper attention on mountain descents and shoulder-less curves. Before pulling out, check brake-pad wear, tire tread depth, and washer-fluid level in the reservoir. Fuel spend holds near $27.60 for the 30 liters (7.9 gallons) consumed. Even in adverse conditions, the flat tariff of $0.43/km guarantees the standard outbound payout of $141.90 — log any incidental costs (extra toll, mandatory meal, emergency lodging) in a separate field on the Clara receipt.