"If I Built a Car" is a children's book by Chris Van Dusen that imagines a fantastical vehicle designed by a young boy. The story explores creative ideas for a car that includes unique features like a built-in ice cream maker, a robot chauffeur, and a bubble machine. The illustrations are vibrant and engaging, capturing the whimsical nature of the boy's imagination. The book encourages readers to think outside the box and dream big about what a car could be, blending elements of fun and innovation in a way that appeals to young audiences.