For much of my late teens and early 20s, I was hearing about people using vegetable oil as a substitute for diesel. If that still works, there may be some additional impact that both limits the fuel price and increases food prices: https://www.tesco.com/groceries/en-GB/products/272515844?_gl...

To the point of the comment you're replying to, US cars are infamously inefficient compared to European cars, and also there's that old quote about how "In the US 100 years is a long time, while in Europe 100 miles is a long way", so the US can still get a price shock even with cheaper fuel than the UK/EU.