Even doing 30,000 miles a year means that you'd probably save less than £30 a month (I'm guessing at fuel consumption but if most of it is motorway and you get less than 40mpg then change your car) if the price dropped by 20p a litre.
People aren't talking about 20p though, they're talking...
Always confuses me why everyone is so obsessed about fuel prices. Does a couple of quid per fill up really matter that much?
Maybe it's just me. I'm the opposite of thrifty, life's too short.