American AI is usually American Airlines, and usually appears because of a baggage fee paid at the airport, or a purchase made during a flight. posted 09/11/2012 Helpful (4)
Electric motors are in general, a lot more efficient that internal combustion engines. An average combustion engine has about 18â20%. A formula one engine, has about 50% of an efficiency.
U.S. Department of Energy â¢ Office of Energy Efficiency and Renewable Energy. freedomCAR & vehicle technologies program. Todayâs direct-injection diesel. engines are more rugged, powerful, durable, and. reliable than gasoline. engines, and use fuel much. more efficiently, as well.