why is Mukeshcontent to dream only of cars and not of planes

Mukesh's circumstances had destined him to be a bangle seller but he wanted to be a motor mechanic when he grew up. He wanted to go to a garage and learn but the garage was far from his home. However, he would not let that get in his way and walk to the garage. Mukesh's dreams were reasonable, he did not dream of flying a plane and was content to dream of cars.