Some Prius sites

PriusChat - An excellent site for news, views and help.

Prius in Singapore - A thread from above Priuschat site.

PriusOnline - Another excellent site on the Prius.

John, The Prius owner

Universal Fuel Consumption Excel Sheet created by 'priusuk2008', a senior member of PriusChat.com.

The Five Stages of Prius Operation

Toyota agent in Singapore

I found the following sites very useful too -

Fuel consumption conversion calculator

Pressure conversion calculator

Speed conversion calculator

Length conversion calculator