Three wheeled machinery

Today were spending few hours at our yard doing some shoveling with the huge snowpiles that are melting really fast and flooding the path from our door. Originally was planning to take some pics there but didn't manage to do it or even take my camera out of my pocket. Shoveling is hard work for a office rat, even with a decent overall physical condition. Phew!

After we got ourselves back inside and had some lunch my son wanted us to figure out could we get anything done from old wooden lego-style kit, which is missing some pieces (received from some relatives if I remember correctly).

So this it what we were able to achieve even without using all the available pieces. And yes you figured it out - fourth wheel is one of those missing pieces.. :)