Fuel predicted to double in price by 2007

[Mutley]

The news tonight (6th Apr) announced fuel had hit a record ($58 US I think) and we would be out of fossle fuel in 40 years.

I suppose the only practical short term alternative is gas for existing vehicles.

How does gas effect performance?

What are the best modifications to do to an engine to maintain performance?

What mods are available that don't look ugly? I have an XY that I don't want to end up looking like a bush bashing taxi from the 80's