A great engine made by General Electric was named GEnx, a turbo type of engine. This is somewhat physically different to the usual engine we found on cars but it still has the same principles. That is burning air-fuel mixture to create energy. Anyways, engine cars create rolling energy to move the vehicles while this Turbo engine creates trust or pushing energy to move the object. A much efficient way compared to the traditional engine. This is also the main reason why it is use for airplanes since planes need a very efficient at the same time a light fuel. By the way, this tube jet uses the finest level of fuel at the same time, the lightest which is propane.