Explanation Hybrid fuel Technology

In addition to the vehicles that use two or more different devices for the drive to hybrids vehicles, including the use of different energy sources or input types ("fuels") using the same engine, but to avoid confusion with hybrids as described above and use to avoid the right words, it is perhaps more correctly described as dual mode vehicles:
• Some vehicles have been modified to use other energy sources when it is available, such as cars running on LPG last (LPG) and diesel to be amended to Waste Vegetable oil, which was not processed into biodiesel to run.
• Flexible-fuel vehicles can be mixed with a mixture of input fuels in one tank
• typically gasoline and ethanol, methanol, biobutanol.
• Bi-fuel vehicles, LPG and natural gas are very different from petroleum or diesel and can not use the same tanks, so it would be impossible for an (LPG or NG) flexible fuel system build. Instead, vehicles with two parallel, feeding the fuel systems a built motor. Although the space doubles cost in some applications, the range and flexibility where (LPG or NG) infrastructure is incomplete, an important incentive to buy.
• Power-assist mechanisms for bicycles or other human vehicles are included (see motorized bicycle).
• Some electric trolleybuses can be between a diesel on board, and overhead power switch on the basis of conditions (see dual mode bus). In principle, this could be combined with a battery sub-system to have a true plug-in hybrid trolleybus announced, even though it appears from 2006, no such construction to create.