From the WSJ Morning Brief (warning: no permalink):
Authorities in China -- whose ever-growing petroleum consumption has been one of the overriding factors driving oil-price growth for at least half a decade -- are now rationing diesel fuel. Soaring oil prices are shrinking refiners' profit margins, and supplies are running short. The rationing, at state-run service stations in at least four of China's economically booming coastal provinces, is limiting truck drivers to about 20 liters -- roughly five gallons -- per visit, Reuters reports.