Stay up to date with notifications from The Independent Notifications can be managed in browser preferences. All News Sport Culture Lifestyle Zach Galifianakis says comedians aren't doing their job when interviewing the president The Iran war has led to American drivers spending an additional $23.9 billion on petrol since 1 March, according to GasBuddy analysis. This increased cost translates to approximately $6,462 per second or $23.3 million every hour for consumers. Oil prices surged in early March due to concerns over Iranian attacks on tankers in the Strait of Hormuz, a vital shipping route for 20 per cent of the world's oil supply. Consequently, US petrol prices surpassed $4 a gallon on average in March for the first time in four years, later nearing $4.50 in early May. The rising energy costs contributed to a jump in US inflation to 3.3 per cent in March, with petrol prices increasing by 21.2 per cent year-on-year.…