Petrol, or fuel is a liquid used to make automobiles go uphill.

This liquid comes from the ground, and is made out of old trees.

But one day, all the old trees will run out. And this is why petrol is so expensive!

If you are poor, and in need of petrol, stay away from England, because petrol there is very expensive!

It is expensive because there are not many trees in England, so they have to be squashed extra hard to get the petrol out.

However, England is not where petrol is the most expensive.

The most expensive petrol comes from solar panels, which can power cars by electrics.

Solar panels are very expensive, due to all of the wires - which explains why, in the long term, wires are better than trees!