Guardian: I moved to the US from the UK a few weeks ago and arrived to hear a nation collectively moaning about the price of fuel. Filling up yesterday, unleaded was $3.96 a gallon (about £2). Now the maths gets a little complicated as a UK gallon is slightly different from a US gallon (it’s equal to roughly 1.2). But after converting from litres (petrol is currently around £1.18 a litre), Brits are paying about £4.47 for a US gallon across the pond. That’s about $8.78. So I started …