Little ones love things that go. Introduce first vocabulary about modes of transportation with this essential baby book. The appealing, textured illustrations compare slow-moving vehicles lik hot-air balloons and bikes with speedy machines like cars and rockets. Little ones love things that go! Introduce first vocabulary about modes of transportation with this essential baby book. The appealing, textured illustrations compare slow-moving vehicles like hot-air balloons and bikes with speedy machines like cars and rockets.