Illinois → Michigan · Interstate 90 / Interstate 94
On heavy-rain or dense-fog days the Chicago, Illinois, to Detroit, Michigan, leg routinely demands well more than the 4h 17m estimated: Interstate 90 / Interstate 94 carries known hydroplaning hot spots and reduced-visibility corridors that justify dropping to 35 mph through a few short stretches. The outbound run covers 450 km (280 miles) over varied topography between Chicago (the largest Midwest metropolis and a national logistics hub) and Detroit (the Motor City and historic capital of the American auto industry), 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 $37.63 for the 40.9 liters (10.8 gallons) consumed. Even in adverse conditions, the flat tariff of $0.43/km guarantees the standard outbound payout of $193.50 — log any incidental costs (extra toll, mandatory meal, emergency lodging) in a separate field on the Clara receipt.