European auto manufacturer uses the real life situation to demo its new break energy recovery system.

Spanish automaker and subsidiary of Volkswagen group, SEAT, is promoting its new energy conservation technology by offering the people of Dusseldorf discounted rides in a cab that rolls back the total fare owed every time the driver steps on the brake.

According to the US Department of Energy, only 14%-26% of the energy created from the fuel in your car is actually used to move it; the rest of the energy is lost to a variety of inefficiencies. While most of the energy, approximately 60%, is lost primarily as heat in the engine, an additional 5%-7% of the energy is lost while braking. That energy which was initially used to propel the car forward ends up being converted into heat and friction and is essentially wasted every time you brake. While that might not seem like a lot, it adds up to a pretty significant loss of fuel over the life of a car.

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