Gas prices in the U.S. have hit a record high for Labor Day weekend, averaging $4.14 per gallon. This is nearly a dollar more than last year and surpasses the previous record of $3.82 from 2012. Prices surged after the U.S. and Israel attacked Iran in February, affecting crude oil traffic through the Strait of Hormuz. Diesel prices are at their own all-time record of $5.85 per gallon. Experts say geopolitical tensions and refinery issues are driving the increases. Drivers can use apps to find cheaper fuel, but broader economic factors make future prices unpredictable.