The Pushback Tractor

There's a lot of work in the airport: it's autumn and they have to clean the leaves from the planes. But there are a lot of leaves. They'll need to pull the plane into the hangar. While Lea and Skoop decorate and repair the old hangar, Leo, along with Lifty and the robots, builds а pushback tractor. It's a very powerful vehicle that can tow along aeroplanes.