Today, Cartoon Truck Leo Junior is building us a LOCOMOTIVE TRAIN! It works with fire and water! Come and see how its built! Smart Kids 3D Construction .br LEO JUNIOR builds a Convertible Car today! Lets Watch and Build with him! Smart Kids 3D Construction Cartoons for Children. If you like Tutitu Cartoons, you .br Have you met Leo JUNIOR? Look at his CAR TRANSPORTER! Its BEAUTIFUL! Smart Kids 3D Construction Cartoons for Children. If you like Tutitu Cartoons, .br Leo is a dump truck! He is very curious and inquisitive and he loves to build things & see how they work! He like to share his fun so please come and join him as .