Ok, they're saying that it's only a matter of time before we pay £1 per litre of fuel:
for my little Ford KA:
Tax = £110 per annum
Petrol = c£35 for a full tank, and we get through roughly 1.5 tanks a week due to 60 mile round trip commute 5 days a week, which gives you some idea of costs.
Insurance = eeek, not sure as OH pays that
Then there's AA membership as well, again don't have the figures to hand.
We're about to trade it in for a Citroen Xsara Picasso, and I understand the tax will be £165 for its bracket.
I'm sure someone else will come along with more sensible figures! But this gives you some idea of petrol costs for a very small car. Not pretty.