Who Said Cars Are Just For Boys? features a little girl named Amy who grows up with a fascination for cars. She loves going to the auto parts store and car shows with her dad and dreams of the day when she can drive.

For now, she settles for riding her bike down her driveway. Amy is ridiculed for having this passion, but with the support of her parents and her good friend Max, she gets the girls in her class interested in model cars and learning about mechanics and horsepower. Through perseverance, Amy grows her "recess car group" of girls, one by one.