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.
Because a greater amount of potential energy is converted to kinetic energy with the same energy input, the External Combustion Engine is theoretically more efficient. The External Combustion Engine can also power two cars at once.