Pseudoscience describes any belief system or methodology which tries to gain legitimacy by wearing the trappings of science, but fails to abide by the rigorous methodology and standards of evidence that are the marks of true science.
1 Flex-fuel hybrid electric and flex-fuel plug-in hybrid are two types of hybrid vehicles built with a combustion engine capable of running on gasoline, E-85, or E-100 to help drive the wheels in conjunction with the electric engine or to recharge the battery pack that powers the electric engine.
While all consumer vehicles and all Flex Fuel Vehicles can run on pure gasoline, not all gasoline engines can run on E85. Care must be taken when refueling your older model vehicle as this high a blend of Ethanol can damage fuel lines and other components.