Are hybrid cars part of the answer to global warming? Possibly they are. Hybrid cars using water for fuel run much cleaner than cars fueled only by gas. Hybrid cars are cars that use two power sources, usually water and gas or electric and gas. This makes the burning inside more effective and the emissions are almost 50% less, which will lead to a ‘greener’ or more environmentally friendly vehicle. The public is generally unaware that there are already ways to run your car on water. You can convert your car yourself with either a kit or with a manual and parts totalling about $200.