Describe the contrast of the scene inside the car with the activities going on outside? Describe the use of images that poet employs to strike that contrast?

She is gravely pained to realise that her mother, who is sleeping beside her in the car, has grown old and is nearing her death. The natural radiance of her body has desiccated. Troubled with the thought, she tries to console herself with the view outside the car that is full of youthful vim and vigor. She watches the trees ‘sprinting’ past their speeding car and the children, full of life and activity, running out of their houses to play.