How many miles do you reckon you have driven (by car) in your life. Work from a reasonable annual average and multiply it up.
When you think about the cost of the fuel used it is quite frightening (although it used to be 59p a litre in the good old days!).
When you think about the cost of the fuel used it is quite frightening (although it used to be 59p a litre in the good old days!).