Please choose the correct answer to the question: A calculation based on the chemical energy of gasoline shows that a car should be able to go 100 miles on a gallon of fuel. When the car was driven on a test track, the car only went 25 miles on a gallon of fuel. What accounts for most of the difference?

Answer1: the mass of the driver and the fuel carried by the car Answer2: the wind resistance between the car and the air nearby Answer3: the waste heat from the combustion of fuel in the engine Answer4: the friction between the tires and the surface of the track

Answer format: answer1/answer2/answer3/answer4
Answer: answer3