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Ronald Ecker, Philipp Holzer, Verena Broy, Andreas Butz
EcoChallenge: A race for efficiency
In Proceedings of the 13th international Conference on Human-Computer interaction with Mobile Devices and Services (MobileHCI'11). Stockholm, Sweden, August 30 - September 2, 2011.

ï»¿Careful use of the limited remaining fossil energy resources is important for both ecological and economical reasons. In addition to technical improvements, fuel consumption of a vehicle is influenced significantly by the driving behavior. Currently, only few in-car user interfaces are trying to promote a more fuel-efficient driving behavior. We propose EcoChallenge, a community- and location-based in-car persuasive game with the goal to motivate and support a behavioral change towards a more fuel-saving driving style. We implemented and integrated EcoChallenge in an experimental vehicle and evaluated it in a field study. The results regarding acceleration, deceleration, breaking and coasting verify the effectiveness of our approach. In addition, users confirmed a very positive experience provided by our system.