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.
RV designs based on van chassis, including minivans, are often much lighter and more fuel-efficient than their truck counterparts. For the most efficient designs, conversion vans, including pop-up models, often weigh less than traditional motor homes, and thus are also more fuel-efficient.