There are three different types of hybrids and each works in a different way. 1) Parallel hybrid cars are the most common type of hybrid, and the Toyota Prius is the most widely known example. The car's wheels can be powered in three different ways: either directly by the engine, by the electric motor alone, or by both power sources working together. Whenever you decelerate or use the brakes, the regenerative braking system produces electricity and stores it in the battery for use later on. The battery is big enough that the electric motor can power the car for up to 1.25 miles. 2) Range extender hybrid cars only use their conventional engine to produce electricity for a generator that recharges the batteries. The engine never drive the car, it only produces energy for the electric motor. The BMW i3 with Ranger Extender is one of the most popular examples. These hybrids are also categorized as either strong or mild depending on the amount of battery power they have. With more battery capacity, strong hybrids can drive further than mild ones on electric power only. 3) Plug-in hybrids as the name implies can by plugged into an electric outlet to recharge their batteries, as well as being charged on the move. Effectively, they are a halfway house between conventional hybrids and full electric vehicles. Although they have a conventional engine, they also have larger batteries than regular hybrids and can drive longer distances on electric power alone - up to 30 miles in some cases.