How does the efficiency of cars compare to the efficiency of bicycles?

Answer 1

Bicycles are a lot more efficient than cars. On a bike 95-98% of the added energy is directly translated into forward motion, while a car would be lucky to reach 40%.

While cars are definitely a faster way of transportation compared to bicycles, bicycles would probably be more efficient. Cars are very expensive and you must pay for gas. You also have to account for the distance and if its necessary to have a car for where you need to travel.