I was wondering what the most efficient way to travelling a mile is between a bicycle, a jogger and a car. The mile is a flat asphalt surface, straight and the weather is a non issue. The car gets 20km/Liter lets say. So the bicycler, jogger and car are lined up at the start and each accelerates to an even 15km/hour, they keep pace with eachother the whole time and finish at the same time. On an energy unit basis expressed in joules which mode of transportation is the most enery efficient?