Key Facts

• The average US petrol price has fallen below $4, as reported in relation to a deal to reopen the Strait of Hormuz.
• No specific names or quotes are provided in the given text.
• No statistics are explicitly mentioned in the provided text apart from the petrol price being below $4.
• The Strait of Hormuz is mentioned as being set to reopen based on a deal, which has contributed to the decrease in petrol prices.