It took a few months to get used to not seeing the Union Jack flying or the lights on in the building at night.

BBC: In Hong Kong, life goes on

Driving within the speed limit and avoiding jack rabbit starts after red lights also help improve gasoline consumption.

FORBES: Three Tips For Beating Rising Gasoline Prices

Meanwhile, respected actors Jack Klugman and Charles Durning are being honoured by the theatre community with the dimming of Broadway's lights.

BBC: Katie Holmes' play gets early Broadway exit