Fair enough!

How am I supposed to know all that bio nonsense, when I was a chemist nothing existed outside the laboratory!

However, I think there are still better alternatives to be explored than the carbon neutral one.. Though when they'll work weel enough is anyone's guess.

Cold fusion, anyone?

Careful - "fuel crises" are just the sort of time when Police would dip a diesel looking for the red stuff!

I knew of someone, however, who attached their filler cap to a dummy tank containing about a pint of ordinary diesel, which was dipped by the Police. The main fuel tank was filled from a filler underneath the back seat, and that used agricultural red diesel, or central heating fuel!