But there are limits to what even stringent economies can achieve.
To rehabilitate the public finances, Vespasian introduced new imposts, including a poll tax on Jews, and practiced stringent economies.
"We expect Micro Hybrid technology will be adopted in Europe first, due to more stringent fuel economy and emissions standards," Mr. Shemanski said.
Although Congress appears to be poised to adopt more stringent fuel economy standards at home, global warming is an international problem that can be solved only through a broad global effort.
With oil prices low, consumers began snapping up pickup trucks and sport utility vehicles, which were governed by less stringent fuel economy standards, thanks to a loophole in the original 1975 law.
Take, for instance, the way trucks, at least in America, haven't had to meet as stringent fuel economy and emission standards as have cars during the past few decades.
Manufacturers sharply increased their development and production of sport utility vehicles and minivans in the 1980s, for example, in large part because those vehicles were subject to less stringent fuel economy regulations in the United States; the automakers then marketed the same models around the globe.
Similarly, people may feel embarrassed about driving gas-guzzling sport utility vehicles, but if the government is afraid of imposing more stringent fuel economy standards on them, or placing higher taxes on gas (which is far cheaper here than in any European country), why scold their owners?
Higher octane gasoline will be an important factor in enabling future spark-ignition engines to meet increasingly stringent fuel economy and CO2 emissions requirements.
BorgWarner is in exactly the right part of the market to help global car makers meet more stringent fuel economy ratings, says Ceraso.
